rsa_sign_asn1_octet_string(3) [netbsd man page]

RSA_sign_ASN1_OCTET_STRING(3)					      OpenSSL					     RSA_sign_ASN1_OCTET_STRING(3)

NAME

       RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING - RSA signatures

LIBRARY

       libcrypto, -lcrypto

SYNOPSIS

	#include <openssl/rsa.h>

	int RSA_sign_ASN1_OCTET_STRING(int dummy, unsigned char *m,
	   unsigned int m_len, unsigned char *sigret, unsigned int *siglen,
	   RSA *rsa);

	int RSA_verify_ASN1_OCTET_STRING(int dummy, unsigned char *m,
	   unsigned int m_len, unsigned char *sigbuf, unsigned int siglen,
	   RSA *rsa);

DESCRIPTION

       RSA_sign_ASN1_OCTET_STRING() signs the octet string m of size m_len using the private key rsa represented in DER using PKCS #1 padding. It
       stores the signature in sigret and the signature size in siglen. sigret must point to RSA_size(rsa) bytes of memory.

       dummy is ignored.

       The random number generator must be seeded prior to calling RSA_sign_ASN1_OCTET_STRING().

       RSA_verify_ASN1_OCTET_STRING() verifies that the signature sigbuf of size siglen is the DER representation of a given octet string m of
       size m_len. dummy is ignored. rsa is the signer's public key.

RETURN VALUES

       RSA_sign_ASN1_OCTET_STRING() returns 1 on success, 0 otherwise.	RSA_verify_ASN1_OCTET_STRING() returns 1 on successful verification, 0
       otherwise.

       The error codes can be obtained by ERR_get_error(3).

BUGS

       These functions serve no recognizable purpose.

SEE ALSO

       ERR_get_error(3), objects(3), openssl_rand(3), openssl_rsa(3), RSA_sign(3), RSA_verify(3)

HISTORY

       RSA_sign_ASN1_OCTET_STRING() and RSA_verify_ASN1_OCTET_STRING() were added in SSLeay 0.8.

1.0.1i								    2009-07-20					     RSA_sign_ASN1_OCTET_STRING(3)

rsa(3)								      OpenSSL								    rsa(3)

NAME

       rsa - RSA public key cryptosystem

SYNOPSIS

	#include <openssl/rsa.h>
	#include <openssl/engine.h>

	RSA * RSA_new(void);
	void RSA_free(RSA *rsa);

	int RSA_public_encrypt(int flen, unsigned char *from,
	   unsigned char *to, RSA *rsa, int padding);
	int RSA_private_decrypt(int flen, unsigned char *from,
	   unsigned char *to, RSA *rsa, int padding);
	int RSA_private_encrypt(int flen, unsigned char *from,
	   unsigned char *to, RSA *rsa,int padding);
	int RSA_public_decrypt(int flen, unsigned char *from,
	   unsigned char *to, RSA *rsa,int padding);

	int RSA_sign(int type, unsigned char *m, unsigned int m_len,
	   unsigned char *sigret, unsigned int *siglen, RSA *rsa);
	int RSA_verify(int type, unsigned char *m, unsigned int m_len,
	   unsigned char *sigbuf, unsigned int siglen, RSA *rsa);

	int RSA_size(const RSA *rsa);

	RSA *RSA_generate_key(int num, unsigned long e,
	   void (*callback)(int,int,void *), void *cb_arg);

	int RSA_check_key(RSA *rsa);

	int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
	void RSA_blinding_off(RSA *rsa);

	void RSA_set_default_method(const RSA_METHOD *meth);
	const RSA_METHOD *RSA_get_default_method(void);
	int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);
	const RSA_METHOD *RSA_get_method(const RSA *rsa);
	RSA_METHOD *RSA_PKCS1_SSLeay(void);
	RSA_METHOD *RSA_null_method(void);
	int RSA_flags(const RSA *rsa);
	RSA *RSA_new_method(ENGINE *engine);

	int RSA_print(BIO *bp, RSA *x, int offset);
	int RSA_print_fp(FILE *fp, RSA *x, int offset);

	int RSA_get_ex_new_index(long argl, char *argp, int (*new_func)(),
	   int (*dup_func)(), void (*free_func)());
	int RSA_set_ex_data(RSA *r,int idx,char *arg);
	char *RSA_get_ex_data(RSA *r, int idx);

	int RSA_sign_ASN1_OCTET_STRING(int dummy, unsigned char *m,
	   unsigned int m_len, unsigned char *sigret, unsigned int *siglen,
	   RSA *rsa);
	int RSA_verify_ASN1_OCTET_STRING(int dummy, unsigned char *m,
	   unsigned int m_len, unsigned char *sigbuf, unsigned int siglen,
	   RSA *rsa);

DESCRIPTION

       These functions implement RSA public key encryption and signatures as defined in PKCS #1 v2.0 [RFC 2437].

       The RSA structure consists of several BIGNUM components. It can contain public as well as private RSA keys:

	struct
	       {
	       BIGNUM *n;	       // public modulus
	       BIGNUM *e;	       // public exponent
	       BIGNUM *d;	       // private exponent
	       BIGNUM *p;	       // secret prime factor
	       BIGNUM *q;	       // secret prime factor
	       BIGNUM *dmp1;	       // d mod (p-1)
	       BIGNUM *dmq1;	       // d mod (q-1)
	       BIGNUM *iqmp;	       // q^-1 mod p
	       // ...
	       };
	RSA

       In public keys, the private exponent and the related secret values are NULL.

       p, q, dmp1, dmq1 and iqmp may be NULL in private keys, but the RSA operations are much faster when these values are available.

       Note that RSA keys may use non-standard RSA_METHOD implementations, either directly or by the use of ENGINE modules. In some cases (eg. an
       ENGINE providing support for hardware-embedded keys), these BIGNUM values will not be used by the implementation or may be used for
       alternative data storage. For this reason, applications should generally avoid using RSA structure elements directly and instead use API
       functions to query or modify keys.

CONFORMING TO

       SSL, PKCS #1 v2.0

PATENTS

       RSA was covered by a US patent which expired in September 2000.

SEE ALSO

       rsa(1), bn(3), dsa(3), dh(3), rand(3), engine(3), RSA_new(3), RSA_public_encrypt(3), RSA_sign(3), RSA_size(3), RSA_generate_key(3),
       RSA_check_key(3), RSA_blinding_on(3), RSA_set_method(3), RSA_print(3), RSA_get_ex_new_index(3), RSA_private_encrypt(3),
       RSA_sign_ASN1_OCTET_STRING(3), RSA_padding_add_PKCS1_type_1(3)

1.0.1e								    2013-02-11								    rsa(3)