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Title "EVP_PKEY_ASN1_GET_COUNT 3ossl" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
EVP_PKEY_asn1_find, EVP_PKEY_asn1_find_str, EVP_PKEY_asn1_get_count, EVP_PKEY_asn1_get0, EVP_PKEY_asn1_get0_info \- enumerate public key ASN.1 methods Header "SYNOPSIS" .Vb 1 #include <openssl/evp.h> \& int EVP_PKEY_asn1_get_count(void); const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx); const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type); const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe, const char *str, int len); int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *pkey_base_id, int *ppkey_flags, const char **pinfo, const char **ppem_str, const EVP_PKEY_ASN1_METHOD *ameth); .Ve Header "DESCRIPTION" \fBEVP_PKEY_asn1_count() returns a count of the number of public key \s-1ASN.1\s0 methods available: it includes standard methods and any methods added by the application.

\fBEVP_PKEY_asn1_get0() returns the public key \s-1ASN.1\s0 method idx. The value of idx must be between zero and EVP_PKEY_asn1_get_count() \- 1.

\fBEVP_PKEY_asn1_find() looks up the \s-1EVP_PKEY_ASN1_METHOD\s0 with \s-1NID\s0 \fBtype. If pe isn't \s-1NULL\s0, then it will look up an engine implementing a \fB\s-1EVP_PKEY_ASN1_METHOD\s0 for the \s-1NID\s0 type and return that instead, and also set *pe to point at the engine that implements it.

\fBEVP_PKEY_asn1_find_str() looks up the \s-1EVP_PKEY_ASN1_METHOD\s0 with \s-1PEM\s0 type string str. Just like EVP_PKEY_asn1_find(), if pe isn't \s-1NULL\s0, then it will look up an engine implementing a \s-1EVP_PKEY_ASN1_METHOD\s0 for the \s-1NID\s0 \fBtype and return that instead, and also set *pe to point at the engine that implements it.

\fBEVP_PKEY_asn1_get0_info() returns the public key \s-1ID,\s0 base public key \s-1ID\s0 (both NIDs), any flags, the method description and \s-1PEM\s0 type string associated with the public key \s-1ASN.1\s0 method *ameth.

\fBEVP_PKEY_asn1_count(), EVP_PKEY_asn1_get0(), EVP_PKEY_asn1_find() and \fBEVP_PKEY_asn1_find_str() are not thread safe, but as long as all \fB\s-1EVP_PKEY_ASN1_METHOD\s0 objects are added before the application gets threaded, using them is safe. See EVP_PKEY_asn1_add0\|(3).

Header "RETURN VALUES" \fBEVP_PKEY_asn1_count() returns the number of available public key methods.

\fBEVP_PKEY_asn1_get0() return a public key method or \s-1NULL\s0 if idx is out of range.

\fBEVP_PKEY_asn1_get0_info() returns 0 on failure, 1 on success.

Header "SEE ALSO" \fBEVP_PKEY_asn1_new\|(3), EVP_PKEY_asn1_add0\|(3) Header "COPYRIGHT" Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.