RSA_sign_ASN1_OCTET_STRING3ssl
Rsa signatures
Usage
#include <openssl/rsa.h>The following functions have been deprecated since OpenSSL 3.0, and can be hidden entirely by defining OPENSSL_API_COMPAT with a suitable version value, see openssl_user_macros(7):
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);
Overview
All of the functions described on this page are deprecated. Applications should instead use EVP PKEY APIs.
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 when calling RSA_sign_ASN1_OCTET_STRING(). If the automatic seeding or reseeding of the OpenSSL CSPRNG fails due to external circumstances (see RAND(7)), the operation will fail.
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).
Releases
13 releases since Debian 3.0 (Woody); the text changed 12 times.