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X509_SIGNATURE_DUMP(3) FreeBSD Library Functions Manual NAME X509_signature_dump, X509_signature_print - pretty-print ASN.1 strings SYNOPSIS #include <openssl/x509.h> int X509_signature_dump(BIO *bio, const ASN1_STRING *signature, int indent); int X509_signature_print(BIO *bio, const X509_ALGOR *algorithm, const ASN1_STRING *signature); DESCRIPTION X509_signature_dump() writes the data bytes contained in the signature to bio in hexadecimal format with colons between bytes, 18 bytes per output line, each line indented with indent space characters. X509_signature_print() writes the name of the signature algorithm, or, if no name for it is known, its object identifier (OID) to bio using i2a_ASN1_OBJECT(3). After that, if a method object for the algorithm can be retrieved with EVP_PKEY_asn1_find(3) and if that object defines a printing method, that printing method is used to print the signature. Otherwise, unless the signature is NULL, it is printed using X509_signature_dump(). RETURN VALUES These functions return 1 on success or 0 on failure. They fail and return as soon as any write operation fails. SEE ALSO ASN1_STRING_new(3), ASN1_STRING_print_ex(3), BIO_new(3), EVP_PKEY_asn1_find(3), OBJ_find_sigid_algs(3), X509_ALGOR_new(3), X509_get0_signature(3) HISTORY X509_signature_print() first appeared in OpenSSL 0.9.7 and has been available since OpenBSD 3.2. X509_signature_dump() first appeared in OpenSSL 1.0.1 and has been available since OpenBSD 5.3. FreeBSD 14.1-RELEASE-p8 December 6, 2024 FreeBSD 14.1-RELEASE-p8