SSL_CIPHER_get_name(3) OpenSSL SSL_CIPHER_get_name(3) NNAAMMEE SSL_CIPHER_get_name, SSL_CIPHER_get_bits, SSL_CIPHER_get_version, SSL_CIPHER_description - get SSL_CIPHER properties SSYYNNOOPPSSIISS #include const char *SSL_CIPHER_get_name(const SSL_CIPHER *cipher); int SSL_CIPHER_get_bits(const SSL_CIPHER *cipher, int *alg_bits); char *SSL_CIPHER_get_version(const SSL_CIPHER *cipher); char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int size); DDEESSCCRRIIPPTTIIOONN _S_S_L___C_I_P_H_E_R___g_e_t___n_a_m_e_(_) returns a pointer to the name of cciipphheerr. If the argument is the NULL pointer, a pointer to the constant value "NONE" is returned. _S_S_L___C_I_P_H_E_R___g_e_t___b_i_t_s_(_) returns the number of secret bits used for cciipphheerr. If aallgg__bbiittss is not NULL, it contains the number of bits pro- cessed by the chosen algorithm. If cciipphheerr is NULL, 0 is returned. _S_S_L___C_I_P_H_E_R___g_e_t___v_e_r_s_i_o_n_(_) returns string which indicates the SSL/TLS protocol version that first defined the cipher. This is currently SSSSLLvv22 or TTLLSSvv11//SSSSLLvv33. In some cases it should possibly return "TLSv1.2" but does not; use _S_S_L___C_I_P_H_E_R___d_e_s_c_r_i_p_t_i_o_n_(_) instead. If cciipphheerr is NULL, "(NONE)" is returned. _S_S_L___C_I_P_H_E_R___d_e_s_c_r_i_p_t_i_o_n_(_) returns a textual description of the cipher used into the buffer bbuuff of length lleenn provided. lleenn must be at least 128 bytes, otherwise a pointer to the string "Buffer too small" is returned. If bbuuff is NULL, a buffer of 128 bytes is allocated using _O_P_E_N_S_S_L___m_a_l_l_o_c_(_). If the allocation fails, a pointer to the string "OPENSSL_malloc Error" is returned. NNOOTTEESS The number of bits processed can be different from the secret bits. An export cipher like e.g. EXP-RC4-MD5 has only 40 secret bits. The algo- rithm does use the full 128 bits (which would be returned for aallgg__bbiittss), of which however 88bits are fixed. The search space is hence only 40 bits. The string returned by _S_S_L___C_I_P_H_E_R___d_e_s_c_r_i_p_t_i_o_n_(_) in case of success con- sists of cleartext information separated by one or more blanks in the following sequence: Textual representation of the cipher name. Protocol version: SSSSLLvv22, SSSSLLvv33, TTLLSSvv11..22. The TLSv1.0 ciphers are flagged with SSLv3. No new ciphers were added by TLSv1.1. Kx= Key exchange method: RRSSAA (for export ciphers as RRSSAA((551122)) or RRSSAA((11002244))), DDHH (for export ciphers as DDHH((551122)) or DDHH((11002244))), DDHH//RRSSAA, DDHH//DDSSSS, FFoorrtteezzzzaa. Au= Authentication method: RRSSAA, DDSSSS, DDHH, NNoonnee. None is the representa- tion of anonymous ciphers. Enc= Encryption method with number of secret bits: DDEESS((4400)), DDEESS((5566)), 33DDEESS((116688)), RRCC44((4400)), RRCC44((5566)), RRCC44((6644)), RRCC44((112288)), RRCC22((4400)), RRCC22((5566)), RRCC22((112288)), IIDDEEAA((112288)), FFoorrtteezzzzaa, NNoonnee. Mac= Message digest: MMDD55, SSHHAA11. If the cipher is flagged exportable with respect to old US crypto regulations, the word "eexxppoorrtt" is printed. EEXXAAMMPPLLEESS Some examples for the output of _S_S_L___C_I_P_H_E_R___d_e_s_c_r_i_p_t_i_o_n_(_): 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 A comp[lete list can be retrieved by invoking the following command: openssl ciphers -v ALL BBUUGGSS If _S_S_L___C_I_P_H_E_R___d_e_s_c_r_i_p_t_i_o_n_(_) is called with cciipphheerr being NULL, the library crashes. If _S_S_L___C_I_P_H_E_R___d_e_s_c_r_i_p_t_i_o_n_(_) cannot handle a built-in cipher, the according description of the cipher property is uunnkknnoowwnn. This case should not occur. RREETTUURRNN VVAALLUUEESS See DESCRIPTION SSEEEE AALLSSOO _s_s_l(3), _S_S_L___g_e_t___c_u_r_r_e_n_t___c_i_p_h_e_r(3), _S_S_L___g_e_t___c_i_p_h_e_r_s(3), _c_i_p_h_e_r_s(1) 1.0.1u 2016-09-22 SSL_CIPHER_get_name(3)