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61 lines
1.9 KiB
61 lines
1.9 KiB
=pod |
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=head1 NAME |
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EVP_PKEY_copy_parameters, EVP_PKEY_missing_parameters, EVP_PKEY_cmp_parameters, EVP_PKEY_cmp - public key parameter and comparison functions |
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=head1 SYNOPSIS |
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#include <openssl/evp.h> |
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int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey); |
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int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from); |
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int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b); |
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int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b); |
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=head1 DESCRIPTION |
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The function EVP_PKEY_missing_parameters() returns 1 if the public key |
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parameters of B<pkey> are missing and 0 if they are present or the algorithm |
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doesn't use parameters. |
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The function EVP_PKEY_copy_parameters() copies the parameters from key |
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B<from> to key B<to>. |
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The funcion EVP_PKEY_cmp_parameters() compares the parameters of keys |
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B<a> and B<b>. |
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The funcion EVP_PKEY_cmp() compares the public key components and paramters |
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(if present) of keys B<a> and B<b>. |
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=head1 NOTES |
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The main purpose of the functions EVP_PKEY_missing_parameters() and |
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EVP_PKEY_copy_parameters() is to handle public keys in certificates where the |
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parameters are sometimes omitted from a public key if they are inherited from |
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the CA that signed it. |
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Since OpenSSL private keys contain public key components too the function |
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EVP_PKEY_cmp() can also be used to determine if a private key matches |
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a public key. |
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=head1 RETURN VALUES |
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The function EVP_PKEY_missing_parameters() returns 1 if the public key |
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parameters of B<pkey> are missing and 0 if they are present or the algorithm |
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doesn't use parameters. |
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These functions EVP_PKEY_copy_parameters() returns 1 for success and 0 for |
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failure. |
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The function EVP_PKEY_cmp_parameters() and EVP_PKEY_cmp() return 1 if the |
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keys match, 0 if they don't match, -1 if the key types are different and |
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-2 if the operation is not supported. |
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=head1 SEE ALSO |
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L<EVP_PKEY_CTX_new(3)|EVP_PKEY_CTX_new(3)>, |
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L<EVP_PKEY_keygen(3)|EVP_PKEY_keygen(3)> |
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=cut
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