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RSA_SIGN_ASN1_OCTET_STRING(3ossl) OpenSSL RSA_SIGN_ASN1_OCTET_STRING(3ossl) NAME RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING - RSA signatures SYNOPSIS #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); DESCRIPTION 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). BUGS These functions serve no recognizable purpose. SEE ALSO ERR_get_error(3), RAND_bytes(3), RSA_sign(3), RSA_verify(3), RAND(7) HISTORY All of these functions were deprecated in OpenSSL 3.0. COPYRIGHT 3.0.11 2023-09-19 RSA_SIGN_ASN1_OCTET_STRING(3ossl)