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113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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* \brief Provide cryptographic signature routines
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*/
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#ifndef _ASTERISK_CRYPTO_H
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#define _ASTERISK_CRYPTO_H
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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#define AST_KEY_PUBLIC (1 << 0)
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#define AST_KEY_PRIVATE (1 << 1)
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struct ast_key;
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/*! \brief Retrieve a key
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* \param name of the key we are retrieving
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* \param int type of key (AST_KEY_PUBLIC or AST_KEY_PRIVATE)
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*
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* Returns the key on success or NULL on failure
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*/
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extern struct ast_key *(*ast_key_get)(const char *key, int type);
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/*! \brief Check the authenticity of a message signature using a given public key
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* \param key a public key to use to verify
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* \param msg the message that has been signed
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* \param sig the proposed valid signature in mime64-like encoding
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*
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* Returns 0 if the signature is valid, or -1 otherwise
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*
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*/
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extern int (*ast_check_signature)(struct ast_key *key, const char *msg, const char *sig);
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/*! \brief Check the authenticity of a message signature using a given public key
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* \param key a public key to use to verify
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* \param msg the message that has been signed
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* \param sig the proposed valid signature in raw binary representation
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*
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* Returns 0 if the signature is valid, or -1 otherwise
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*
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*/
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extern int (*ast_check_signature_bin)(struct ast_key *key, const char *msg, int msglen, const unsigned char *sig);
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/*!
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* \param key a private key to use to create the signature
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* \param msg the message to sign
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* \param sig a pointer to a buffer of at least 256 bytes in which the
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* mime64-like encoded signature will be stored
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*
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* Returns 0 on success or -1 on failure.
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*
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*/
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extern int (*ast_sign)(struct ast_key *key, char *msg, char *sig);
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/*!
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* \param key a private key to use to create the signature
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* \param msg the message to sign
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* \param sig a pointer to a buffer of at least 128 bytes in which the
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* raw encoded signature will be stored
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*
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* Returns 0 on success or -1 on failure.
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*
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*/
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extern int (*ast_sign_bin)(struct ast_key *key, const char *msg, int msglen, unsigned char *sig);
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/*!
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* \param key a private key to use to encrypt
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* \param src the message to encrypt
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* \param srclen the length of the message to encrypt
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* \param dst a pointer to a buffer of at least srclen * 1.5 bytes in which the encrypted
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* answer will be stored
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*
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* Returns length of encrypted data on success or -1 on failure.
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*
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*/
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extern int (*ast_encrypt_bin)(unsigned char *dst, const unsigned char *src, int srclen, struct ast_key *key);
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/*!
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* \param key a private key to use to decrypt
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* \param src the message to decrypt
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* \param srclen the length of the message to decrypt
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* \param dst a pointer to a buffer of at least srclen bytes in which the decrypted
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* answer will be stored
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*
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* Returns length of decrypted data on success or -1 on failure.
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*
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*/
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extern int (*ast_decrypt_bin)(unsigned char *dst, const unsigned char *src, int srclen, struct ast_key *key);
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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#endif /* _ASTERISK_CRYPTO_H */
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