SSL_CIPHER_get_name(3) | OpenSSL | SSL_CIPHER_get_name(3) |
SSL_CIPHER_get_bits() returns the number of secret bits used for cipher. If alg_bits is not NULL, it contains the number of bits processed by the chosen algorithm. If cipher is NULL, 0 is returned.
SSL_CIPHER_get_version() returns the protocol version for cipher, currently "SSLv2", "SSLv3", or "TLSv1". If cipher is NULL, "(NONE)" is returned.
SSL_CIPHER_description() returns a textual description of the cipher used into the buffer buf of length len provided. len must be at least 128 bytes, otherwise a pointer to the string "Buffer too small" is returned. If buf is NULL, a buffer of 128 bytes is allocated using OPENSSL_malloc(). If the allocation fails, a pointer to the string "OPENSSL_malloc Error" is returned.
The string returned by SSL_CIPHER_description() in case of success consists of cleartext information separated by one or more blanks in the following sequence:
<ciphername> | Textual representation of the cipher name. |
<protocol version> | Protocol version: SSLv2, SSLv3. The TLSv1 ciphers are flagged with SSLv3. |
Kx=<key exchange> | Key exchange method: RSA (for export ciphers as RSA(512) or RSA(1024)), DH (for export ciphers as DH(512) or DH(1024)), DH/RSA, DH/DSS, Fortezza. |
Au=<authentication> | Authentication method: RSA, DSS, DH, None. None is the representation of anonymous ciphers. |
Enc=<symmetric encryption method> | Encryption method with number of secret bits: DES(40), DES(56), 3DES(168), RC4(40), RC4(56), RC4(64), RC4(128), RC2(40), RC2(56), RC2(128), IDEA(128), Fortezza, None. |
Mac=<message authentication code> | Message digest: MD5, SHA1. |
<export flag> | If the cipher is flagged exportable with respect to old US crypto regulations, the word " export" is printed. |
EDH-RSA-DES-CBC3-SHA SSLv3 Kx=DH Au=RSA Enc=3DES(168) Mac=SHA1 EDH-DSS-DES-CBC3-SHA SSLv3 Kx=DH Au=DSS Enc=3DES(168) Mac=SHA1 RC4-MD5 SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=MD5 EXP-RC4-MD5 SSLv3 Kx=RSA(512) Au=RSA Enc=RC4(40) Mac=MD5 export
If SSL_CIPHER_description() cannot handle a built-in cipher, the according description of the cipher property is unknown. This case should not occur.
January 6, 2010 | 1.0.1-dev |