Provide Cryptographic Signature capability. More...

#include "asterisk.h"
#include <dirent.h>
#include <sys/stat.h>
#include <openssl/err.h>
#include <openssl/ssl.h>
#include <openssl/evp.h>
#include <openssl/md5.h>
#include <openssl/sha.h>
#include "asterisk/cli.h"
#include "asterisk/compat.h"
#include "asterisk/io.h"
#include "asterisk/linkedlists.h"
#include "asterisk/logger.h"
#include "asterisk/md5.h"
#include "asterisk/module.h"
#include "asterisk/options.h"
#include "asterisk/paths.h"
#include "asterisk/utils.h"
#include "asterisk/file.h"
#include "asterisk/crypto.h"

Include dependency graph for res_crypto.c:

Go to the source code of this file.

Data Structures
struct	ast_key

struct	crypto_load_on_file

struct	keys

Macros
#define	AST_API_MODULE

#define	FILE_MODE_BITS (S_ISUID\|S_ISGID\|S_ISVTX\|S_IRWXU\|S_IRWXG\|S_IRWXO)

#define	FORMAT "%-18s %-8s %-16s %-33s\n"

#define	KEY_NEEDS_PASSCODE (1 << 16)

#define	RSA_PKCS1_OAEP_PADDING_SIZE (1 + 2 * SHA_DIGEST_LENGTH)

Functions
static void	__reg_module (void)

static void	__unreg_module (void)

int AST_OPTIONAL_API_NAME()	ast_aes_decrypt (const unsigned char in, unsigned char out, const ast_aes_decrypt_key *key)
	AES decrypt data.

int AST_OPTIONAL_API_NAME()	ast_aes_encrypt (const unsigned char in, unsigned char out, const ast_aes_encrypt_key *key)
	AES encrypt data.

int AST_OPTIONAL_API_NAME()	ast_aes_set_decrypt_key (const unsigned char key, ast_aes_decrypt_key ctx)
	Set a decryption key.

int AST_OPTIONAL_API_NAME()	ast_aes_set_encrypt_key (const unsigned char key, ast_aes_encrypt_key ctx)
	Set an encryption key.

int AST_OPTIONAL_API_NAME()	ast_check_signature (struct ast_key key, const char msg, const char *sig)
	base64 decode then sent to __ast_check_signature_bin

int AST_OPTIONAL_API_NAME()	ast_check_signature_bin (struct ast_key key, const char msg, int msglen, const unsigned char *dsig)
	check signature of a message

int AST_OPTIONAL_API_NAME()	ast_crypto_loaded (void)

int AST_OPTIONAL_API_NAME()	ast_crypto_reload (void)

int AST_OPTIONAL_API_NAME()	ast_decrypt_bin (unsigned char dst, const unsigned char src, int srclen, struct ast_key *key)
	decrypt a message

int AST_OPTIONAL_API_NAME()	ast_encrypt_bin (unsigned char dst, const unsigned char src, int srclen, struct ast_key *key)
	encrypt a message

struct ast_key *AST_OPTIONAL_API_NAME()	ast_key_get (const char *kname, int ktype)
	return the ast_key structure for name

struct ast_module *	AST_MODULE_SELF_SYM (void)

int AST_OPTIONAL_API_NAME()	ast_sign (struct ast_key key, char msg, char *sig)
	wrapper for __ast_sign_bin then base64 encode it

int AST_OPTIONAL_API_NAME()	ast_sign_bin (struct ast_key key, const char msg, int msglen, unsigned char *dsig)
	signs outgoing message with public key

static int	crypto_init (void)
	initialise the res_crypto module

static void	crypto_load (int ifd, int ofd)
	refresh RSA keys from file

static int	crypto_load_cb (const char directory, const char file, void *obj)

static int	evp_cipher_aes_decrypt (const unsigned char in, unsigned char out, unsigned inlen, const ast_aes_decrypt_key *key)

static int	evp_cipher_aes_encrypt (const unsigned char in, unsigned char out, unsigned inlen, const ast_aes_encrypt_key *key)

static int	evp_pkey_decrypt (EVP_PKEY pkey, const unsigned char in, unsigned inlen, unsigned char out, unsigned outlen, unsigned padding)

static int	evp_pkey_encrypt (EVP_PKEY pkey, const unsigned char in, unsigned inlen, unsigned char out, unsigned outlen, unsigned padding)

static int	evp_pkey_sign (EVP_PKEY pkey, const unsigned char in, unsigned inlen, unsigned char sig, unsigned siglen, unsigned padding)

static int	evp_pkey_verify (EVP_PKEY pkey, const unsigned char in, unsigned inlen, const unsigned char *sig, unsigned siglen, unsigned padding)

static char *	handle_cli_keys_init (struct ast_cli_entry e, int cmd, struct ast_cli_args a)
	initialize all RSA keys

static char *	handle_cli_keys_show (struct ast_cli_entry e, int cmd, struct ast_cli_args a)
	show the list of RSA keys

static int	load_module (void)

static void	md52sum (char sum, unsigned char md5)

static int	pw_cb (char buf, int size, int rwflag, void userdata)
	setting of priv key

static int	reload (void)

static struct ast_key *	try_load_key (const char dir, const char fname, int ifd, int ofd, int *not2)
	load RSA key from file

static int	unload_module (void)

Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_GLOBAL_SYMBOLS \| AST_MODFLAG_LOAD_ORDER , .description = "Cryptographic Digital Signatures" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .reload = reload, .load_pri = AST_MODPRI_CHANNEL_DEPEND, }

static const struct ast_module_info *	ast_module_info = &__mod_info

static struct ast_cli_entry	cli_crypto []

static struct keys	keys = AST_RWLIST_HEAD_INIT_VALUE

Detailed Description

Provide Cryptographic Signature capability.

Author: Mark Spencer marks.nosp@m.ter@.nosp@m.digiu.nosp@m.m.co.nosp@m.m

Uses the OpenSSL library, available at http://www.openssl.org/

Definition in file res_crypto.c.

Macro Definition Documentation

◆ AST_API_MODULE

#define AST_API_MODULE

Definition at line 57 of file res_crypto.c.

◆ FILE_MODE_BITS

◆ FORMAT

#define FORMAT "%-18s %-8s %-16s %-33s\n"

◆ KEY_NEEDS_PASSCODE

#define KEY_NEEDS_PASSCODE (1 << 16)

Definition at line 73 of file res_crypto.c.

◆ RSA_PKCS1_OAEP_PADDING_SIZE

#define RSA_PKCS1_OAEP_PADDING_SIZE (1 + 2 * SHA_DIGEST_LENGTH)

Definition at line 78 of file res_crypto.c.

Function Documentation

◆ __reg_module()

static void __reg_module ( void )

static

Definition at line 996 of file res_crypto.c.

◆ __unreg_module()

static void __unreg_module ( void )

static

Definition at line 996 of file res_crypto.c.

◆ ast_aes_decrypt()

int AST_OPTIONAL_API_NAME() ast_aes_decrypt	(	const unsigned char *	in,
		unsigned char *	out,
		const ast_aes_decrypt_key *	key
	)

AES decrypt data.

Parameters

in	encrypted data
out	pointer to a buffer to hold the decrypted output
key	pointer to the ast_aes_decrypt_key to use for decryption

Return values

<=	0 failure
otherwise	number of bytes in output buffer

Definition at line 790 of file res_crypto.c.

{
    int res;
 
    if ((res = evp_cipher_aes_decrypt(in, out, AST_CRYPTO_AES_BLOCKSIZE / 8, key)) <= 0) {
        ast_log(LOG_ERROR, "AES decryption failed\n");
    }
    return res;
}

References AST_CRYPTO_AES_BLOCKSIZE, ast_log, evp_cipher_aes_decrypt(), in, LOG_ERROR, and out.

Referenced by aes_helper(), AST_TEST_DEFINE(), decrypt_memcpy(), and memcpy_decrypt().

◆ ast_aes_encrypt()

int AST_OPTIONAL_API_NAME() ast_aes_encrypt	(	const unsigned char *	in,
		unsigned char *	out,
		const ast_aes_encrypt_key *	key
	)

AES encrypt data.

Parameters

in	data to be encrypted
out	pointer to a buffer to hold the encrypted output
key	pointer to the ast_aes_encrypt_key to use for encryption

Return values

<=	0 failure
otherwise	number of bytes in output buffer

Definition at line 749 of file res_crypto.c.

{
    int res;
 
    if ((res = evp_cipher_aes_encrypt(in, out, AST_CRYPTO_AES_BLOCKSIZE / 8, key)) <= 0) {
        ast_log(LOG_ERROR, "AES encryption failed\n");
    }
    return res;
}

References AST_CRYPTO_AES_BLOCKSIZE, ast_log, evp_cipher_aes_encrypt(), in, LOG_ERROR, and out.

Referenced by aes_helper(), AST_TEST_DEFINE(), encrypt_memcpy(), and memcpy_encrypt().

◆ ast_aes_set_decrypt_key()

int AST_OPTIONAL_API_NAME() ast_aes_set_decrypt_key	(	const unsigned char *	key,
		ast_aes_decrypt_key *	ctx
	)

Set a decryption key.

Parameters

key	a 16 char key
ctx	address of an aes encryption context

Return values

0	success
nonzero	failure

Definition at line 709 of file res_crypto.c.

{
    if (key == NULL || ctx == NULL) {
        return -1;
    }
    memcpy(ctx->raw, key, AST_CRYPTO_AES_BLOCKSIZE / 8);
    return 0;
}

References AST_CRYPTO_AES_BLOCKSIZE, and NULL.

Referenced by aes_helper(), AST_TEST_DEFINE(), build_ecx_key(), build_encryption_keys(), check_key(), socket_process_helper(), and update_key().

◆ ast_aes_set_encrypt_key()

int AST_OPTIONAL_API_NAME() ast_aes_set_encrypt_key	(	const unsigned char *	key,
		ast_aes_encrypt_key *	ctx
	)

Set an encryption key.

Parameters

key	a 16 char key
ctx	address of an aes encryption context

Return values

0	success
nonzero	failure

Definition at line 700 of file res_crypto.c.

{
    if (key == NULL || ctx == NULL) {
        return -1;
    }
    memcpy(ctx->raw, key, AST_CRYPTO_AES_BLOCKSIZE / 8);
    return 0;
}

References AST_CRYPTO_AES_BLOCKSIZE, and NULL.

Referenced by aes_helper(), AST_TEST_DEFINE(), build_ecx_key(), check_key(), and update_key().

◆ ast_check_signature()

int AST_OPTIONAL_API_NAME() ast_check_signature	(	struct ast_key *	key,
		const char *	msg,
		const char *	sig
	)

base64 decode then sent to __ast_check_signature_bin

Check the authenticity of a message signature using a given public key.

See also: ast_check_signature

Definition at line 673 of file res_crypto.c.

{
    unsigned char dsig[128];
    int res;
 
    /* Decode signature */
    if ((res = ast_base64decode(dsig, sig, sizeof(dsig))) != sizeof(dsig)) {
        ast_log(LOG_WARNING, "Signature improper length (expect %d, got %d)\n", (int)sizeof(dsig), (int)res);
        return -1;
    }
 
    res = ast_check_signature_bin(key, msg, strlen(msg), dsig);
 
    return res;
}

References ast_base64decode(), ast_check_signature_bin(), ast_log, and LOG_WARNING.

Referenced by authenticate_verify(), and register_verify().

◆ ast_check_signature_bin()

int AST_OPTIONAL_API_NAME() ast_check_signature_bin	(	struct ast_key *	key,
		const char *	msg,
		int	msglen,
		const unsigned char *	dsig
	)

check signature of a message

Check the authenticity of a message signature using a given public key.

See also: ast_check_signature_bin

Definition at line 634 of file res_crypto.c.

{
    unsigned char digest[SHA_DIGEST_LENGTH];
    unsigned digestlen;
    int res;
    EVP_MD_CTX *ctx = NULL;
 
    if (key->ktype != AST_KEY_PUBLIC) {
        /* Okay, so of course you really *can* but for our purposes
           we're going to say you can't */
        ast_log(LOG_WARNING, "Cannot check message signature with a private key\n");
        return -1;
    }
 
    /* Calculate digest of message */
    ctx = EVP_MD_CTX_create();
    if (ctx == NULL) {
        ast_log(LOG_ERROR, "Out of memory\n");
        return -1;
    }
    EVP_DigestInit(ctx, EVP_sha1());
    EVP_DigestUpdate(ctx, msg, msglen);
    EVP_DigestFinal(ctx, digest, &digestlen);
    EVP_MD_CTX_destroy(ctx);
 
    /* Verify signature */
    if (!(res = evp_pkey_verify(key->pkey, (const unsigned char *)digest, sizeof(digest), (unsigned char *)dsig, 128, RSA_PKCS1_PADDING))) {
        ast_debug(1, "Key failed verification: %s\n", key->name);
        return -1;
    }
 
    /* Pass */
    return 0;
}

References ast_debug, AST_KEY_PUBLIC, ast_log, ast_key::digest, evp_pkey_verify(), ast_key::ktype, LOG_ERROR, LOG_WARNING, ast_key::name, NULL, and ast_key::pkey.

Referenced by ast_check_signature(), AST_TEST_DEFINE(), and check_key().

◆ ast_crypto_loaded()

int AST_OPTIONAL_API_NAME() ast_crypto_loaded ( void )

Definition at line 689 of file res_crypto.c.

{
    return 1;
}

Referenced by AST_TEST_DEFINE().

◆ ast_crypto_reload()

int AST_OPTIONAL_API_NAME() ast_crypto_reload ( void )

Definition at line 694 of file res_crypto.c.

{
    crypto_load(-1, -1);
    return 1;
}

References crypto_load().

Referenced by AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), and AST_TEST_DEFINE().

◆ ast_decrypt_bin()

int AST_OPTIONAL_API_NAME() ast_decrypt_bin	(	unsigned char *	dst,
		const unsigned char *	src,
		int	srclen,
		struct ast_key *	key
	)

decrypt a message

Decrypt a message using a given private key.

See also: ast_decrypt_bin

Definition at line 472 of file res_crypto.c.

{
    int res;
    unsigned pos = 0, dstlen, blocksize;
 
    if (key->ktype != AST_KEY_PRIVATE) {
        ast_log(LOG_WARNING, "Cannot decrypt with a public key\n");
        return -1;
    }
 
    blocksize = EVP_PKEY_size(key->pkey);
 
    if (srclen % blocksize) {
        ast_log(LOG_NOTICE, "Tried to decrypt something not a multiple of %u bytes\n", blocksize);
        return -1;
    }
 
    while (srclen > 0) {
        /* Process chunks 128 bytes at a time */
        dstlen = blocksize;
        if ((res = evp_pkey_decrypt(key->pkey, src, blocksize, dst, &dstlen, RSA_PKCS1_OAEP_PADDING)) <= 0) {
            return -1;
        }
        pos += dstlen;
        src += blocksize;
        srclen -= blocksize;
        dst += dstlen;
    }
 
    return pos;
}

References AST_KEY_PRIVATE, ast_log, evp_pkey_decrypt(), ast_key::ktype, LOG_NOTICE, LOG_WARNING, and ast_key::pkey.

Referenced by AST_TEST_DEFINE(), and check_key().

◆ ast_encrypt_bin()

int AST_OPTIONAL_API_NAME() ast_encrypt_bin	(	unsigned char *	dst,
		const unsigned char *	src,
		int	srclen,
		struct ast_key *	key
	)

encrypt a message

Encrypt a message using a given private key.

See also: ast_encrypt_bin

Definition at line 549 of file res_crypto.c.

{
    unsigned bytes, pos = 0, dstlen, blocksize;
    int res;
 
    if (key->ktype != AST_KEY_PUBLIC) {
        ast_log(LOG_WARNING, "Cannot encrypt with a private key\n");
        return -1;
    }
 
    blocksize = EVP_PKEY_size(key->pkey);
 
    while (srclen) {
        bytes = srclen;
        if (bytes > blocksize - RSA_PKCS1_OAEP_PADDING_SIZE) {
            bytes = blocksize - RSA_PKCS1_OAEP_PADDING_SIZE;
        }
        /* Process chunks 128-41 bytes at a time */
        dstlen = blocksize;
        if ((res = evp_pkey_encrypt(key->pkey, src, bytes, dst, &dstlen, RSA_PKCS1_OAEP_PADDING)) != blocksize) {
            ast_log(LOG_NOTICE, "How odd, encrypted size is %d\n", res);
            return -1;
        }
        src += bytes;
        srclen -= bytes;
        pos += dstlen;
        dst += dstlen;
    }
    return pos;
}

References AST_KEY_PUBLIC, ast_log, evp_pkey_encrypt(), ast_key::ktype, LOG_NOTICE, LOG_WARNING, ast_key::pkey, and RSA_PKCS1_OAEP_PADDING_SIZE.

Referenced by AST_TEST_DEFINE(), and update_key().

◆ ast_key_get()

struct ast_key *AST_OPTIONAL_API_NAME() ast_key_get	(	const char *	kname,
		int	ktype
	)

return the ast_key structure for name

Retrieve a key.

See also: ast_key_get

Definition at line 149 of file res_crypto.c.

{
    struct ast_key *key;
 
    AST_RWLIST_RDLOCK(&keys);
    AST_RWLIST_TRAVERSE(&keys, key, list) {
        if (!strcmp(kname, key->name) &&
            (ktype == key->ktype)) {
            break;
        }
    }
    AST_RWLIST_UNLOCK(&keys);
 
    return key;
}

References AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, ast_key::ktype, ast_key::list, and ast_key::name.

Referenced by AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), authenticate(), authenticate_verify(), check_key(), register_verify(), and update_key().

◆ AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM ( void )

Definition at line 996 of file res_crypto.c.

◆ ast_sign()

int AST_OPTIONAL_API_NAME() ast_sign	(	struct ast_key *	key,
		char *	msg,
		char *	sig
	)

wrapper for __ast_sign_bin then base64 encode it

Sign a message signature using a given private key.

See also: ast_sign

Definition at line 584 of file res_crypto.c.

{
    /* assumes 1024 bit RSA key size */
    unsigned char dsig[128];
    int siglen = sizeof(dsig), res;
 
    if (!(res = ast_sign_bin(key, msg, strlen(msg), dsig))) {
        /* Success -- encode (256 bytes max as documented) */
        ast_base64encode(sig, dsig, siglen, 256);
    }
 
    return res;
}

References ast_base64encode(), and ast_sign_bin().

Referenced by authenticate().

◆ ast_sign_bin()

int AST_OPTIONAL_API_NAME() ast_sign_bin	(	struct ast_key *	key,
		const char *	msg,
		int	msglen,
		unsigned char *	dsig
	)

signs outgoing message with public key

Sign a message signature using a given private key.

See also: ast_sign_bin

Definition at line 390 of file res_crypto.c.

{
    unsigned char digest[SHA_DIGEST_LENGTH];
    unsigned digestlen, siglen = 128;
    int res;
    EVP_MD_CTX *ctx = NULL;
 
    if (key->ktype != AST_KEY_PRIVATE) {
        ast_log(LOG_WARNING, "Cannot sign with a public key\n");
        return -1;
    }
 
    if (siglen < EVP_PKEY_size(key->pkey)) {
        ast_log(LOG_WARNING, "Signature buffer too small\n");
        return -1;
    }
 
    /* Calculate digest of message */
    ctx = EVP_MD_CTX_create();
    if (ctx == NULL) {
        ast_log(LOG_ERROR, "Out of memory\n");
        return -1;
    }
    EVP_DigestInit(ctx, EVP_sha1());
    EVP_DigestUpdate(ctx, msg, msglen);
    EVP_DigestFinal(ctx, digest, &digestlen);
    EVP_MD_CTX_destroy(ctx);
 
    /* Verify signature */
    if ((res = evp_pkey_sign(key->pkey, digest, sizeof(digest), dsig, &siglen, RSA_PKCS1_PADDING)) <= 0) {
        ast_log(LOG_WARNING, "RSA Signature (key %s) failed %d\n", key->name, res);
        return -1;
    }
 
    if (siglen != EVP_PKEY_size(key->pkey)) {
        ast_log(LOG_WARNING, "Unexpected signature length %u, expecting %d\n", siglen, EVP_PKEY_size(key->pkey));
        return -1;
    }
 
    return 0;
}

References AST_KEY_PRIVATE, ast_log, ast_key::digest, evp_pkey_sign(), ast_key::ktype, LOG_ERROR, LOG_WARNING, ast_key::name, NULL, and ast_key::pkey.

Referenced by ast_sign(), AST_TEST_DEFINE(), and update_key().

◆ crypto_init()

static int crypto_init ( void )

static

initialise the res_crypto module

Definition at line 959 of file res_crypto.c.

{
    ast_cli_register_multiple(cli_crypto, ARRAY_LEN(cli_crypto));
    return 0;
}

References ARRAY_LEN, ast_cli_register_multiple, and cli_crypto.

Referenced by load_module().

◆ crypto_load()

static void crypto_load	(	int	ifd,
		int	ofd
	)

static

refresh RSA keys from file

Parameters

ifd	file descriptor
ofd	file descriptor

Definition at line 819 of file res_crypto.c.

{
    struct ast_key *key;
    struct crypto_load_on_file on_file = { ifd, ofd, 0 };
 
    AST_RWLIST_WRLOCK(&keys);
 
    /* Mark all keys for deletion */
    AST_RWLIST_TRAVERSE(&keys, key, list) {
        key->delme = 1;
    }
 
    if (ast_file_read_dirs(ast_config_AST_KEY_DIR, crypto_load_cb, &on_file, 1) == -1) {
        ast_log(LOG_WARNING, "Unable to open key directory '%s'\n", ast_config_AST_KEY_DIR);
    }
 
    if (on_file.note) {
        ast_log(LOG_NOTICE, "Please run the command 'keys init' to enter the passcodes for the keys\n");
    }
 
    /* Delete any keys that are no longer present */
    AST_RWLIST_TRAVERSE_SAFE_BEGIN(&keys, key, list) {
        if (key->delme) {
            ast_debug(1, "Deleting key %s type %d\n", key->name, key->ktype);
            AST_RWLIST_REMOVE_CURRENT(list);
            if (key->pkey) {
                EVP_PKEY_free(key->pkey);
            }
            ast_free(key);
        }
    }
    AST_RWLIST_TRAVERSE_SAFE_END;
 
    AST_RWLIST_UNLOCK(&keys);
}

References ast_config_AST_KEY_DIR, ast_debug, ast_file_read_dirs(), ast_free, ast_log, AST_RWLIST_REMOVE_CURRENT, AST_RWLIST_TRAVERSE, AST_RWLIST_TRAVERSE_SAFE_BEGIN, AST_RWLIST_TRAVERSE_SAFE_END, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, crypto_load_cb(), ast_key::delme, crypto_load_on_file::ifd, ast_key::ktype, LOG_NOTICE, LOG_WARNING, ast_key::name, crypto_load_on_file::note, crypto_load_on_file::ofd, and ast_key::pkey.

◆ crypto_load_cb()

static int crypto_load_cb	(	const char *	directory,
		const char *	file,
		void *	obj
	)

static

Definition at line 806 of file res_crypto.c.

{
    struct crypto_load_on_file *on_file = obj;
 
    try_load_key(directory, file, on_file->ifd, on_file->ofd, &on_file->note);
    return 0;
}

References crypto_load_on_file::ifd, crypto_load_on_file::note, crypto_load_on_file::ofd, and try_load_key().

Referenced by crypto_load().

◆ evp_cipher_aes_decrypt()

static int evp_cipher_aes_decrypt	(	const unsigned char *	in,
		unsigned char *	out,
		unsigned	inlen,
		const ast_aes_decrypt_key *	key
	)

static

Definition at line 759 of file res_crypto.c.

{
    EVP_CIPHER_CTX *ctx = NULL;
    int res, outlen, finallen;
    unsigned char final[AST_CRYPTO_AES_BLOCKSIZE / 8];
 
    if ((ctx = EVP_CIPHER_CTX_new()) == NULL) {
        return -1;
    }
 
    do {
        if ((res = EVP_CipherInit(ctx, EVP_aes_128_ecb(), key->raw, NULL, 0)) <= 0) {
            break;
        }
        EVP_CIPHER_CTX_set_padding(ctx, 0);
        if ((res = EVP_CipherUpdate(ctx, out, &outlen, in, inlen)) <= 0) {
            break;
        }
        /* for ECB, this is a no-op */
        if ((res = EVP_CipherFinal(ctx, final, &finallen)) <= 0) {
            break;
        }
 
        res = outlen;
    } while (0);
 
    EVP_CIPHER_CTX_free(ctx);
 
    return res;
}

References AST_CRYPTO_AES_BLOCKSIZE, in, NULL, out, and aes_key::raw.

Referenced by ast_aes_decrypt().

◆ evp_cipher_aes_encrypt()

static int evp_cipher_aes_encrypt	(	const unsigned char *	in,
		unsigned char *	out,
		unsigned	inlen,
		const ast_aes_encrypt_key *	key
	)

static

Definition at line 718 of file res_crypto.c.

{
    EVP_CIPHER_CTX *ctx = NULL;
    int res, outlen, finallen;
    unsigned char final[AST_CRYPTO_AES_BLOCKSIZE / 8];
 
    if ((ctx = EVP_CIPHER_CTX_new()) == NULL) {
        return -1;
    }
 
    do {
        if ((res = EVP_CipherInit(ctx, EVP_aes_128_ecb(), key->raw, NULL, 1)) <= 0) {
            break;
        }
        EVP_CIPHER_CTX_set_padding(ctx, 0);
        if ((res = EVP_CipherUpdate(ctx, out, &outlen, in, inlen)) <= 0) {
            break;
        }
        /* for ECB, this is a no-op */
        if ((res = EVP_CipherFinal(ctx, final, &finallen)) <= 0) {
            break;
        }
 
        res = outlen;
    } while (0);
 
    EVP_CIPHER_CTX_free(ctx);
 
    return res;
}

References AST_CRYPTO_AES_BLOCKSIZE, in, NULL, out, and aes_key::raw.

Referenced by ast_aes_encrypt().

◆ evp_pkey_decrypt()

static int evp_pkey_decrypt	(	EVP_PKEY *	pkey,
		const unsigned char *	in,
		unsigned	inlen,
		unsigned char *	out,
		unsigned *	outlen,
		unsigned	padding
	)

static

Definition at line 432 of file res_crypto.c.

{
    EVP_PKEY_CTX *ctx = NULL;
    int res = -1;
    size_t _outlen;
 
    if (*outlen < EVP_PKEY_size(pkey)) {
        return -1;
    }
 
    if (inlen != EVP_PKEY_size(pkey)) {
        return -1;
    }
 
    if ((ctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL) {
        return -1;
    }
 
    do {
        if ((res = EVP_PKEY_decrypt_init(ctx)) <= 0) {
            break;
        }
        if ((res = EVP_PKEY_CTX_set_rsa_padding(ctx, padding)) <= 0) {
            break;
        }
        _outlen = *outlen;
        if ((res = EVP_PKEY_decrypt(ctx, out, &_outlen, in, inlen)) <= 0) {
            break;
        }
        res = *outlen = _outlen;
    } while (0);
 
    EVP_PKEY_CTX_free(ctx);
    return res;
}

References in, NULL, out, and ast_key::pkey.

Referenced by ast_decrypt_bin().

◆ evp_pkey_encrypt()

static int evp_pkey_encrypt	(	EVP_PKEY *	pkey,
		const unsigned char *	in,
		unsigned	inlen,
		unsigned char *	out,
		unsigned *	outlen,
		unsigned	padding
	)

static

Definition at line 504 of file res_crypto.c.

{
    EVP_PKEY_CTX *ctx = NULL;
    int res = -1;
    size_t _outlen;
 
    if (padding != RSA_PKCS1_OAEP_PADDING) {
        ast_log(LOG_WARNING, "Only OAEP padding is supported for now\n");
        return -1;
    }
 
    if (inlen > EVP_PKEY_size(pkey) - RSA_PKCS1_OAEP_PADDING_SIZE) {
        return -1;
    }
 
    if (*outlen < EVP_PKEY_size(pkey)) {
        return -1;
    }
 
    do {
        if ((ctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL) {
            break;
        }
 
        if ((res = EVP_PKEY_encrypt_init(ctx)) <= 0) {
            break;
        }
        if ((res = EVP_PKEY_CTX_set_rsa_padding(ctx, padding)) <= 0) {
            break;
        }
        _outlen = *outlen;
        if ((res = EVP_PKEY_encrypt(ctx, out, &_outlen, in, inlen)) <= 0) {
            break;
        }
        res = *outlen = _outlen;
    } while (0);
 
    EVP_PKEY_CTX_free(ctx);
    return res;
}

References ast_log, in, LOG_WARNING, NULL, out, ast_key::pkey, and RSA_PKCS1_OAEP_PADDING_SIZE.

Referenced by ast_encrypt_bin().

◆ evp_pkey_sign()

static int evp_pkey_sign	(	EVP_PKEY *	pkey,
		const unsigned char *	in,
		unsigned	inlen,
		unsigned char *	sig,
		unsigned *	siglen,
		unsigned	padding
	)

static

Definition at line 351 of file res_crypto.c.

{
    EVP_PKEY_CTX *ctx = NULL;
    int res = -1;
    size_t _siglen;
 
    if (*siglen < EVP_PKEY_size(pkey)) {
        return -1;
    }
 
    if ((ctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL) {
        return -1;
    }
 
    do {
        if ((res = EVP_PKEY_sign_init(ctx)) <= 0) {
            break;
        }
        if ((res = EVP_PKEY_CTX_set_rsa_padding(ctx, padding)) <= 0) {
            break;
        }
        if ((res = EVP_PKEY_CTX_set_signature_md(ctx, EVP_sha1())) <= 0) {
            break;
        }
        _siglen = *siglen;
        if ((res = EVP_PKEY_sign(ctx, sig, &_siglen, in, inlen)) <= 0) {
            break;
        }
        *siglen = _siglen;
    } while (0);
 
    EVP_PKEY_CTX_free(ctx);
    return res;
}

References in, and NULL.

Referenced by ast_sign_bin().

◆ evp_pkey_verify()

static int evp_pkey_verify	(	EVP_PKEY *	pkey,
		const unsigned char *	in,
		unsigned	inlen,
		const unsigned char *	sig,
		unsigned	siglen,
		unsigned	padding
	)

static

Definition at line 598 of file res_crypto.c.

{
    EVP_PKEY_CTX *ctx = NULL;
    int res = -1;
 
    if (siglen < EVP_PKEY_size(pkey)) {
        return -1;
    }
 
    if ((ctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL) {
        return -1;
    }
 
    do {
        if ((res = EVP_PKEY_verify_init(ctx)) <= 0) {
            break;
        }
        if ((res = EVP_PKEY_CTX_set_rsa_padding(ctx, padding)) <= 0) {
            break;
        }
        if ((res = EVP_PKEY_CTX_set_signature_md(ctx, EVP_sha1())) <= 0) {
            break;
        }
        if ((res = EVP_PKEY_verify(ctx, sig, siglen, in, inlen)) <= 0) {
            break;
        }
    } while (0);
 
    EVP_PKEY_CTX_free(ctx);
    return res;
}

References in, NULL, and ast_key::pkey.

Referenced by ast_check_signature_bin().

◆ handle_cli_keys_init()

static char * handle_cli_keys_init	(	struct ast_cli_entry *	e,
		int	cmd,
		struct ast_cli_args *	a
	)

static

initialize all RSA keys

Parameters

e	CLI command
cmd
a	list of CLI arguments

Return values

CLI_SUCCESS

Definition at line 916 of file res_crypto.c.

{
    struct ast_key *key;
    int ign;
    char *kn, tmp[256] = "";
 
    switch (cmd) {
    case CLI_INIT:
        e->command = "keys init";
        e->usage =
            "Usage: keys init\n"
            "       Initializes private keys (by reading in pass code from\n"
            "       the user)\n";
        return NULL;
    case CLI_GENERATE:
        return NULL;
    }
 
    if (a->argc != 2) {
        return CLI_SHOWUSAGE;
    }
 
    AST_RWLIST_WRLOCK(&keys);
    AST_RWLIST_TRAVERSE_SAFE_BEGIN(&keys, key, list) {
        /* Reload keys that need pass codes now */
        if (key->ktype & KEY_NEEDS_PASSCODE) {
            kn = key->fn + strlen(ast_config_AST_KEY_DIR) + 1;
            ast_copy_string(tmp, kn, sizeof(tmp));
            try_load_key(ast_config_AST_KEY_DIR, tmp, a->fd, a->fd, &ign);
        }
    }
    AST_RWLIST_TRAVERSE_SAFE_END
    AST_RWLIST_UNLOCK(&keys);
 
    return CLI_SUCCESS;
}

References a, ast_config_AST_KEY_DIR, ast_copy_string(), AST_RWLIST_TRAVERSE_SAFE_BEGIN, AST_RWLIST_TRAVERSE_SAFE_END, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_key::fn, KEY_NEEDS_PASSCODE, ast_key::ktype, ast_key::list, NULL, try_load_key(), and ast_cli_entry::usage.

◆ handle_cli_keys_show()

static char * handle_cli_keys_show	(	struct ast_cli_entry *	e,
		int	cmd,
		struct ast_cli_args *	a
	)

static

show the list of RSA keys

Parameters

e	CLI command
cmd
a	list of CLI arguments

Return values

CLI_SUCCESS

Definition at line 870 of file res_crypto.c.

{
#define FORMAT "%-18s %-8s %-16s %-33s\n"
 
    struct ast_key *key;
    char sum[MD5_DIGEST_LENGTH * 2 + 1];
    int count_keys = 0;
 
    switch (cmd) {
    case CLI_INIT:
        e->command = "keys show";
        e->usage =
            "Usage: keys show\n"
            "       Displays information about RSA keys known by Asterisk\n";
        return NULL;
    case CLI_GENERATE:
        return NULL;
    }
 
    ast_cli(a->fd, FORMAT, "Key Name", "Type", "Status", "Sum");
    ast_cli(a->fd, FORMAT, "------------------", "--------", "----------------", "--------------------------------");
 
    AST_RWLIST_RDLOCK(&keys);
    AST_RWLIST_TRAVERSE(&keys, key, list) {
        md52sum(sum, key->digest);
        ast_cli(a->fd, FORMAT, key->name,
            (key->ktype & 0xf) == AST_KEY_PUBLIC ? "PUBLIC" : "PRIVATE",
            key->ktype & KEY_NEEDS_PASSCODE ? "[Needs Passcode]" : "[Loaded]", sum);
        count_keys++;
    }
    AST_RWLIST_UNLOCK(&keys);
 
    ast_cli(a->fd, "\n%d known RSA keys.\n", count_keys);
 
    return CLI_SUCCESS;
 
#undef FORMAT
}

References a, ast_cli(), AST_KEY_PUBLIC, AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, CLI_GENERATE, CLI_INIT, CLI_SUCCESS, ast_cli_entry::command, ast_key::digest, FORMAT, KEY_NEEDS_PASSCODE, ast_key::ktype, ast_key::list, md52sum(), MD5_DIGEST_LENGTH, ast_key::name, NULL, and ast_cli_entry::usage.

◆ load_module()

static int load_module ( void )

static

Definition at line 971 of file res_crypto.c.

{
    crypto_init();
    if (ast_opt_init_keys) {
        crypto_load(STDIN_FILENO, STDOUT_FILENO);
    } else {
        crypto_load(-1, -1);
    }
 
    return AST_MODULE_LOAD_SUCCESS;
}

References AST_MODULE_LOAD_SUCCESS, ast_opt_init_keys, crypto_init(), and crypto_load().

◆ md52sum()

static void md52sum	(	char *	sum,
		unsigned char *	md5
	)

static

Definition at line 855 of file res_crypto.c.

{
    int x;
    for (x = 0; x < MD5_DIGEST_LENGTH; x++) {
        sum += sprintf(sum, "%02hhx", *(md5++));
    }
}

References md5(), and MD5_DIGEST_LENGTH.

Referenced by handle_cli_keys_show().

◆ pw_cb()

static int pw_cb	(	char *	buf,
		int	size,
		int	rwflag,
		void *	userdata
	)

static

setting of priv key

Parameters

buf
size
rwflag
userdata

Returns: length of string,-1 on failure

Definition at line 112 of file res_crypto.c.

{
    struct ast_key *key = (struct ast_key *)userdata;
    char prompt[256];
    int tmp;
    int res;
 
    if (key->infd < 0) {
        /* Note that we were at least called */
        key->infd = -2;
        return -1;
    }
 
    snprintf(prompt, sizeof(prompt), ">>>> passcode for %s key '%s': ",
         key->ktype == AST_KEY_PRIVATE ? "PRIVATE" : "PUBLIC", key->name);
    if (write(key->outfd, prompt, strlen(prompt)) < 0) {
        ast_log(LOG_WARNING, "write() failed: %s\n", strerror(errno));
        key->infd = -2;
        return -1;
    }
    tmp = ast_hide_password(key->infd);
    memset(buf, 0, size);
    res = read(key->infd, buf, size);
    if (res == -1) {
        ast_log(LOG_WARNING, "read() failed: %s\n", strerror(errno));
    }
    ast_restore_tty(key->infd, tmp);
    if (buf[strlen(buf) -1] == '\n') {
        buf[strlen(buf) - 1] = '\0';
    }
    return strlen(buf);
}

References ast_hide_password(), AST_KEY_PRIVATE, ast_log, ast_restore_tty(), buf, errno, ast_key::infd, ast_key::ktype, LOG_WARNING, ast_key::name, ast_key::outfd, and prompt.

Referenced by try_load_key().

◆ reload()

static int reload ( void )

static

Definition at line 965 of file res_crypto.c.

{
    crypto_load(-1, -1);
    return 0;
}

References crypto_load().

◆ try_load_key()

static struct ast_key * try_load_key	(	const char *	dir,
		const char *	fname,
		int	ifd,
		int	ofd,
		int *	not2
	)

static

load RSA key from file

Parameters

dir	directory string
fname	name of file
ifd	incoming file descriptor
ofd	outgoing file descriptor
not2

Returns: key on success.

Return values

NULL	on failure.

Definition at line 175 of file res_crypto.c.

{
    int n, ktype = 0, found = 0;
    const char *c = NULL;
    char ffname[256];
    unsigned char digest[MD5_DIGEST_LENGTH];
    unsigned digestlen;
    FILE *f;
    EVP_MD_CTX *ctx = NULL;
    struct ast_key *key;
    static int notice = 0;
    struct stat st;
    size_t fnamelen = strlen(fname);
 
    /* Make sure its name is a public or private key */
    if (fnamelen > 4 && !strcmp((c = &fname[fnamelen - 4]), ".pub")) {
        ktype = AST_KEY_PUBLIC;
    } else if (fnamelen > 4 && !strcmp((c = &fname[fnamelen - 4]), ".key")) {
        ktype = AST_KEY_PRIVATE;
    } else {
        return NULL;
    }
 
    /* Get actual filename */
    n = snprintf(ffname, sizeof(ffname), "%s/%s", dir, fname);
    if (n >= sizeof(ffname)) {
        ast_log(LOG_WARNING,
            "Key filenames can be up to %zu bytes long, but the filename for the"
            " key we are currently trying to load (%s/%s) is %d bytes long.",
            sizeof(ffname) - 1, dir, fname, n);
        return NULL;
    }
 
    /* Open file */
    if (!(f = fopen(ffname, "r"))) {
        ast_log(LOG_WARNING, "Unable to open key file %s: %s\n", ffname, strerror(errno));
        return NULL;
    }
 
    n = fstat(fileno(f), &st);
    if (n != 0) {
        ast_log(LOG_ERROR, "Unable to stat key file: %s: %s\n", ffname, strerror(errno));
        fclose(f);
        return NULL;
    }
 
    if (!S_ISREG(st.st_mode)) {
        ast_log(LOG_ERROR, "Key file is not a regular file: %s\n", ffname);
        fclose(f);
        return NULL;
    }
 
    /* FILE_MODE_BITS is a bitwise OR of all possible file mode bits encoded in
     * the `st_mode` member of `struct stat`. For POSIX compatible systems this
     * will be 07777. */
#define FILE_MODE_BITS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)
 
    /* only user read or read/write modes allowed */
    if (ktype == AST_KEY_PRIVATE &&
        ((st.st_mode & FILE_MODE_BITS) & ~(S_IRUSR | S_IWUSR)) != 0) {
        ast_log(LOG_ERROR, "Private key file has bad permissions: %s: %#4o\n", ffname, st.st_mode & FILE_MODE_BITS);
        fclose(f);
        return NULL;
    }
 
    ctx = EVP_MD_CTX_create();
    if (ctx == NULL) {
        ast_log(LOG_ERROR, "Out of memory\n");
        fclose(f);
        return NULL;
    }
    EVP_DigestInit(ctx, EVP_md5());
 
    while (!feof(f)) {
        /* Calculate a "whatever" quality md5sum of the key */
        char buf[256] = "";
        if (!fgets(buf, sizeof(buf), f)) {
            continue;
        }
        if (!feof(f)) {
            EVP_DigestUpdate(ctx, (unsigned char *)buf, strlen(buf));
        }
    }
    EVP_DigestFinal(ctx, digest, &digestlen);
    EVP_MD_CTX_destroy(ctx);
 
    /* Look for an existing key */
    AST_RWLIST_TRAVERSE(&keys, key, list) {
        if (!strcasecmp(key->fn, ffname)) {
            break;
        }
    }
 
    if (key) {
        /* If the MD5 sum is the same, and it isn't awaiting a passcode
           then this is far enough */
        if (!memcmp(digest, key->digest, sizeof(digest)) &&
            !(key->ktype & KEY_NEEDS_PASSCODE)) {
            fclose(f);
            key->delme = 0;
            return NULL;
        } else {
            /* Preserve keytype */
            ktype = key->ktype;
            /* Recycle the same structure */
            found++;
        }
    }
 
    if (!key) {
        if (!(key = ast_calloc(1, sizeof(*key)))) {
            fclose(f);
            return NULL;
        }
    }
    /* First the filename */
    ast_copy_string(key->fn, ffname, sizeof(key->fn));
    /* Then the name minus the suffix */
    snprintf(key->name, sizeof(key->name), "%.*s", (int)(c - fname), fname);
    key->ktype = ktype;
    /* Yes, assume we're going to be deleted */
    key->delme = 1;
    /* Keep the key type */
    memcpy(key->digest, digest, sizeof(key->digest));
    /* Can I/O takes the FD we're given */
    key->infd = ifd;
    key->outfd = ofd;
    /* Reset the file back to the beginning */
    rewind(f);
    /* Now load the key with the right method */
    if (ktype == AST_KEY_PUBLIC) {
        PEM_read_PUBKEY(f, &key->pkey, pw_cb, key);
    } else {
        PEM_read_PrivateKey(f, &key->pkey, pw_cb, key);
    }
    fclose(f);
    if (key->pkey) {
        if (EVP_PKEY_size(key->pkey) == (AST_CRYPTO_RSA_KEY_BITS / 8)) {
            /* Key loaded okay */
            key->ktype &= ~KEY_NEEDS_PASSCODE;
            ast_verb(3, "Loaded %s key '%s'\n", key->ktype == AST_KEY_PUBLIC ? "PUBLIC" : "PRIVATE", key->name);
            ast_debug(1, "Key '%s' loaded OK\n", key->name);
            key->delme = 0;
        } else {
            ast_log(LOG_NOTICE, "Key '%s' is not expected size.\n", key->name);
        }
    } else if (key->infd != -2) {
        ast_log(LOG_WARNING, "Key load %s '%s' failed\n", key->ktype == AST_KEY_PUBLIC ? "PUBLIC" : "PRIVATE", key->name);
        if (ofd > -1) {
            ERR_print_errors_fp(stderr);
        } else {
            ERR_print_errors_fp(stderr);
        }
    } else {
        ast_log(LOG_NOTICE, "Key '%s' needs passcode.\n", key->name);
        key->ktype |= KEY_NEEDS_PASSCODE;
        if (!notice) {
            if (!ast_opt_init_keys) {
                ast_log(LOG_NOTICE, "Add the '-i' flag to the asterisk command line if you want to automatically initialize passcodes at launch.\n");
            }
            notice++;
        }
        /* Keep it anyway */
        key->delme = 0;
        /* Print final notice about "keys init" when done */
        *not2 = 1;
    }
 
    /* If this is a new key add it to the list */
    if (!found) {
        AST_RWLIST_INSERT_TAIL(&keys, key, list);
    }
 
    return key;
}

References ast_calloc, ast_copy_string(), AST_CRYPTO_RSA_KEY_BITS, ast_debug, AST_KEY_PRIVATE, AST_KEY_PUBLIC, ast_log, ast_opt_init_keys, AST_RWLIST_INSERT_TAIL, AST_RWLIST_TRAVERSE, ast_verb, buf, c, ast_key::delme, ast_key::digest, errno, FILE_MODE_BITS, ast_key::fn, ast_key::infd, KEY_NEEDS_PASSCODE, ast_key::ktype, LOG_ERROR, LOG_NOTICE, LOG_WARNING, MD5_DIGEST_LENGTH, ast_key::name, NULL, ast_key::outfd, ast_key::pkey, and pw_cb().

Referenced by crypto_load_cb(), and handle_cli_keys_init().

◆ unload_module()

static int unload_module ( void )

static

Since we don't have a config file, we could move up to REALTIME_DEPEND, if necessary

Definition at line 983 of file res_crypto.c.

References ARRAY_LEN, ast_cli_unregister_multiple(), and cli_crypto.

Variable Documentation

◆ __mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_GLOBAL_SYMBOLS | AST_MODFLAG_LOAD_ORDER , .description = "Cryptographic Digital Signatures" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .reload = reload, .load_pri = AST_MODPRI_CHANNEL_DEPEND, }

static

Definition at line 996 of file res_crypto.c.

◆ ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 996 of file res_crypto.c.

◆ cli_crypto

struct ast_cli_entry cli_crypto[]

static

Initial value:

= {
    { .handler =  handle_cli_keys_show , .summary =  "Displays RSA key information" ,},
    { .handler =  handle_cli_keys_init , .summary =  "Initialize RSA key passcodes" ,}
}

Definition at line 953 of file res_crypto.c.

                                           {
    AST_CLI_DEFINE(handle_cli_keys_show, "Displays RSA key information"),
    AST_CLI_DEFINE(handle_cli_keys_init, "Initialize RSA key passcodes")
};

Referenced by crypto_init(), and unload_module().

◆ keys

struct keys keys = AST_RWLIST_HEAD_INIT_VALUE

static

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ AST_API_MODULE

◆ FILE_MODE_BITS

◆ FORMAT

◆ KEY_NEEDS_PASSCODE

◆ RSA_PKCS1_OAEP_PADDING_SIZE

Function Documentation

◆ __reg_module()

◆ __unreg_module()

◆ ast_aes_decrypt()

◆ ast_aes_encrypt()

◆ ast_aes_set_decrypt_key()

◆ ast_aes_set_encrypt_key()

◆ ast_check_signature()

◆ ast_check_signature_bin()

◆ ast_crypto_loaded()

◆ ast_crypto_reload()

◆ ast_decrypt_bin()

◆ ast_encrypt_bin()

◆ ast_key_get()

◆ AST_MODULE_SELF_SYM()

◆ ast_sign()

◆ ast_sign_bin()

◆ crypto_init()

◆ crypto_load()

◆ crypto_load_cb()

◆ evp_cipher_aes_decrypt()

◆ evp_cipher_aes_encrypt()

◆ evp_pkey_decrypt()

◆ evp_pkey_encrypt()

◆ evp_pkey_sign()

◆ evp_pkey_verify()

◆ handle_cli_keys_init()

◆ handle_cli_keys_show()

◆ load_module()

◆ md52sum()

◆ pw_cb()

◆ reload()

◆ try_load_key()

◆ unload_module()

Variable Documentation

◆ __mod_info

◆ ast_module_info

◆ cli_crypto

◆ keys