1 files changed, 126 insertions, 0 deletions
diff --git a/trunk/include/asterisk/crypto.h b/trunk/include/asterisk/crypto.h
new file mode 100644
index 000000000..427c5ea51
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+++ b/trunk/include/asterisk/crypto.h
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+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 1999 - 2005, Digium, Inc.
+ *
+ * Mark Spencer <markster@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ * \brief Provide cryptographic signature routines
+ */
+
+#ifndef _ASTERISK_CRYPTO_H
+#define _ASTERISK_CRYPTO_H
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+#define AST_KEY_PUBLIC	(1 << 0)
+#define AST_KEY_PRIVATE	(1 << 1)
+
+struct ast_key;
+
+/*! 
+ * \brief Retrieve a key
+ * \param name of the key we are retrieving
+ * \param int type of key (AST_KEY_PUBLIC or AST_KEY_PRIVATE)
+ *
+ * \retval the key on success.
+ * \retval NULL on failure.
+ */
+struct ast_key *(*ast_key_get)(const char *key, int type);
+
+/*! 
+ * \brief Check the authenticity of a message signature using a given public key
+ * \param key a public key to use to verify
+ * \param msg the message that has been signed
+ * \param sig the proposed valid signature in mime64-like encoding
+ *
+ * \retval 0 if the signature is valid.
+ * \retval -1 otherwise.
+ *
+ */
+int (*ast_check_signature)(struct ast_key *key, const char *msg, const char *sig);
+
+/*! 
+ * \brief Check the authenticity of a message signature using a given public key
+ * \param key a public key to use to verify
+ * \param msg the message that has been signed
+ * \param sig the proposed valid signature in raw binary representation
+ *
+ * \retval 0 if the signature is valid.
+ * \retval -1 otherwise.
+ *
+ */
+int (*ast_check_signature_bin)(struct ast_key *key, const char *msg, int msglen, const unsigned char *sig);
+
+/*!
+ * \brief Sign a message signature using a given private key
+ * \param key a private key to use to create the signature
+ * \param msg the message to sign
+ * \param sig a pointer to a buffer of at least 256 bytes in which the
+ * mime64-like encoded signature will be stored
+ *
+ * \retval 0 on success.
+ * \retval -1 on failure.
+ *
+ */
+int (*ast_sign)(struct ast_key *key, char *msg, char *sig);
+
+/*!
+ * \brief Sign a message signature using a given private key
+ * \param key a private key to use to create the signature
+ * \param msg the message to sign
+ * \param sig a pointer to a buffer of at least 128 bytes in which the
+ * raw encoded signature will be stored
+ *
+ * \retval 0 on success.
+ * \retval -1 on failure.
+ *
+ */
+int (*ast_sign_bin)(struct ast_key *key, const char *msg, int msglen, unsigned char *sig);
+
+/*!
+ * \brief Encrypt a message using a given private key
+ * \param key a private key to use to encrypt
+ * \param src the message to encrypt
+ * \param srclen the length of the message to encrypt
+ * \param dst a pointer to a buffer of at least srclen * 1.5 bytes in which the encrypted
+ * answer will be stored
+ *
+ * \retval length of encrypted data on success.
+ * \retval -1 on failure.
+ *
+ */
+int (*ast_encrypt_bin)(unsigned char *dst, const unsigned char *src, int srclen, struct ast_key *key);
+
+/*!
+ * \brief Decrypt a message using a given private key
+ * \param key a private key to use to decrypt
+ * \param src the message to decrypt
+ * \param srclen the length of the message to decrypt
+ * \param dst a pointer to a buffer of at least srclen bytes in which the decrypted
+ * answer will be stored
+ *
+ * \retval length of dencrypted data on success.
+ * \retval -1 on failure.
+ *
+ */
+int (*ast_decrypt_bin)(unsigned char *dst, const unsigned char *src, int srclen, struct ast_key *key);
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+#endif /* _ASTERISK_CRYPTO_H */