RSA_SIGN_ASN1_OCTET_STRING - Online Linux Manual PageSection : 3
Updated : 2021-03-26
Source : 1.1.1k
Note : OpenSSL
NAMERSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING − RSA signatures
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 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).
BUGSThese functions serve no recognizable purpose.
SEE ALSO​ERR_get_error (3), ​RAND_bytes (3), RSA_sign (3), ​RSA_verify (3), ​RAND (7)
COPYRIGHTCopyright 2000−2019 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (the ‟License”). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>. 0
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