crypto 3 2005-10-05 0.9.9-dev OpenSSL
NAME
crypto - OpenSSL cryptographic library
LIBRARY
libcrypto, -lcrypto
SYNOPSIS
DESCRIPTION
The OpenSSL ccrryyppttoo library implements a wide range of cryptographic
algorithms used in various Internet standards. The services provided
by this library are used by the OpenSSL implementations of SSL, TLS
and S/MIME, and they have also been used to implement SSH, OpenPGP, and
other cryptographic standards.
OVERVIEW
lliibbccrryyppttoo consists of a number of sub-libraries that implement the
individual algorithms.
The functionality includes symmetric encryption, public key
cryptography and key agreement, certificate handling, cryptographic
hash functions and a cryptographic pseudo-random number generator.
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SYMMETRIC CIPHERS
_o_p_e_n_s_s_l___b_l_o_w_f_i_s_h(3), _c_a_s_t(3),
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_o_p_e_n_s_s_l___d_e_s(3), _i_d_e_a(3), _r_c_2(3),
_o_p_e_n_s_s_l___r_c_4(3), _r_c_5(3)
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PUBLIC KEY CRYPTOGRAPHY AND KEY AGREEMENT
_o_p_e_n_s_s_l___d_s_a(3), _o_p_e_n_s_s_l___d_h(3),
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_o_p_e_n_s_s_l___r_s_a(3)
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CERTIFICATES
_o_p_e_n_s_s_l___x_5_0_9(3), _x_5_0_9_v_3(3)
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AUTHENTICATION CODES, HASH FUNCTIONS
_o_p_e_n_s_s_l___h_m_a_c(3), _m_d_2(3), _m_d_4(3),
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_o_p_e_n_s_s_l___m_d_5(3), _o_p_e_n_s_s_l___m_d_c_2(3),
_o_p_e_n_s_s_l___r_i_p_e_m_d(3), _o_p_e_n_s_s_l___s_h_a(3)
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AUXILIARY FUNCTIONS
_o_p_e_n_s_s_l___e_r_r(3), _o_p_e_n_s_s_l___t_h_r_e_a_d_s(3),
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_o_p_e_n_s_s_l___r_a_n_d(3),
_O_P_E_N_S_S_L___V_E_R_S_I_O_N___N_U_M_B_E_R(3)
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INPUT/OUTPUT, DATA ENCODING
_a_s_n_1(3), _o_p_e_n_s_s_l___b_i_o(3),
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_o_p_e_n_s_s_l___e_v_p(3), _o_p_e_n_s_s_l___p_e_m(3),
_o_p_e_n_s_s_l___p_k_c_s_7(3), _o_p_e_n_s_s_l___p_k_c_s_1_2(3)
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INTERNAL FUNCTIONS
_o_p_e_n_s_s_l___b_n(3), _o_p_e_n_s_s_l___b_u_f_f_e_r(3),
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_o_p_e_n_s_s_l___l_h_a_s_h(3), _o_b_j_e_c_t_s(3),
_s_t_a_c_k(3), _t_x_t___d_b(3)
NOTES
Some of the newer functions follow a naming convention using the numbers
00 and 11. For example the functions:
int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev);
int X509_add1_trust_object(X509 *x, ASN1_OBJECT *obj);
The 00 version uses the supplied structure pointer directly
in the parent and it will be freed up when the parent is freed.
In the above example ccrrll would be freed but rreevv would not.
The 11 function uses a copy of the supplied structure pointer
(or in some cases increases its link count) in the parent and
so both (xx and oobbjj above) should be freed up.
SEE ALSO
_o_p_e_n_s_s_l(1), _s_s_l(3)