mirror of
https://github.com/openssl/openssl.git
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126 lines
4.2 KiB
Plaintext
126 lines
4.2 KiB
Plaintext
=pod
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=head1 NAME
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rsa - RSA public key cryptosystem
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=head1 SYNOPSIS
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#include <openssl/rsa.h>
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RSA * RSA_new(void);
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void RSA_free(RSA *rsa);
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int RSA_public_encrypt(int flen, unsigned char *from,
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unsigned char *to, RSA *rsa, int padding);
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int RSA_private_decrypt(int flen, unsigned char *from,
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unsigned char *to, RSA *rsa, int padding);
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int RSA_sign(int type, unsigned char *m, unsigned int m_len,
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unsigned char *sigret, unsigned int *siglen, RSA *rsa);
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int RSA_verify(int type, unsigned char *m, unsigned int m_len,
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unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
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int RSA_size(RSA *rsa);
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RSA *RSA_generate_key(int num, unsigned long e,
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void (*callback)(int,int,void *), void *cb_arg);
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int RSA_check_key(RSA *rsa);
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int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
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void RSA_blinding_off(RSA *rsa);
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void RSA_set_default_method(RSA_METHOD *meth);
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RSA_METHOD *RSA_get_default_method(void);
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RSA_METHOD *RSA_set_method(RSA *rsa, RSA_METHOD *meth);
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RSA_METHOD *RSA_get_method(RSA *rsa);
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RSA_METHOD *RSA_PKCS1_SSLeay(void);
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RSA_METHOD *RSA_PKCS1_RSAref(void);
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RSA_METHOD *RSA_null_method(void);
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int RSA_flags(RSA *rsa);
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RSA *RSA_new_method(RSA_METHOD *method);
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int RSA_print(BIO *bp, RSA *x, int offset);
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int RSA_print_fp(FILE *fp, RSA *x, int offset);
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int RSA_get_ex_new_index(long argl, char *argp, int (*new_func)(),
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int (*dup_func)(), void (*free_func)());
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int RSA_set_ex_data(RSA *r,int idx,char *arg);
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char *RSA_get_ex_data(RSA *r, int idx);
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int RSA_private_encrypt(int flen, unsigned char *from,
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unsigned char *to, RSA *rsa,int padding);
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int RSA_public_decrypt(int flen, unsigned char *from,
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unsigned char *to, RSA *rsa,int padding);
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int RSA_sign_ASN1_OCTET_STRING(int dummy, unsigned char *m,
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unsigned int m_len, unsigned char *sigret, unsigned int *siglen,
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RSA *rsa);
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int RSA_verify_ASN1_OCTET_STRING(int dummy, unsigned char *m,
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unsigned int m_len, unsigned char *sigbuf, unsigned int siglen,
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RSA *rsa);
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int RSA_padding_add_PKCS1_type_1(unsigned char *to, int tlen,
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unsigned char *f, int fl);
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int RSA_padding_check_PKCS1_type_1(unsigned char *to, int tlen,
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unsigned char *f, int fl, int rsa_len);
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int RSA_padding_add_PKCS1_type_2(unsigned char *to, int tlen,
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unsigned char *f, int fl);
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int RSA_padding_check_PKCS1_type_2(unsigned char *to, int tlen,
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unsigned char *f, int fl, int rsa_len);
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int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
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unsigned char *f, int fl, unsigned char *p, int pl);
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int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen,
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unsigned char *f, int fl, int rsa_len, unsigned char *p, int pl);
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int RSA_padding_add_SSLv23(unsigned char *to, int tlen,
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unsigned char *f, int fl);
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int RSA_padding_check_SSLv23(unsigned char *to, int tlen,
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unsigned char *f, int fl, int rsa_len);
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int RSA_padding_add_none(unsigned char *to, int tlen,
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unsigned char *f, int fl);
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int RSA_padding_check_none(unsigned char *to, int tlen,
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unsigned char *f, int fl, int rsa_len);
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=head1 DESCRIPTION
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These functions implement RSA public key encryption and signatures
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as defined in PKCS #1 v2.0 [RFC 2437].
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The B<RSA> structure consists of several BIGNUM components. It can
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contain public as well as private RSA keys:
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struct
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{
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BIGNUM *n; // public modulus
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BIGNUM *e; // public exponent
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BIGNUM *d; // private exponent
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BIGNUM *p; // secret prime factor
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BIGNUM *q; // secret prime factor
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BIGNUM *dmp1; // d mod (p-1)
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BIGNUM *dmq1; // d mod (q-1)
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BIGNUM *iqmp; // q^-1 mod p
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// ...
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};
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RSA
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In public keys, the private exponent and the related secret values are
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B<NULL>.
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B<dmp1>, B<dmq1> and B<iqmp> may be B<NULL> in private keys, but the
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RSA operations are much faster when these values are available.
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=head1 PATENTS
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RSA is covered by a US patent which expires in September 2000.
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=head1 SEE ALSO
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rsa(1), bn(3), dsa(3), dh(3), rand(3), RSA_new(3),
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RSA_public_encrypt(3), RSA_sign(3), RSA_size(3), RSA_generate_key(3),
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RSA_check_key(3), RSA_blinding_on(3), RSA_set_method(3), RSA_print(3),
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RSA_get_ex_new_index(3), RSA_private_encrypt(3),
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RSA_sign_ASN_OCTET_STRING(3), RSA_padding_add_PKCS1_type_1(3)
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=cut
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