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Man Pages


Manual Reference Pages  -  EVP_PKEY_UP_REF (3)

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NAME

EVP_PKEY_new, EVP_PKEY_up_ref, EVP_PKEY_free - private key allocation functions.

CONTENTS

SYNOPSIS



 #include <openssl/evp.h>

 EVP_PKEY *EVP_PKEY_new(void);
 void EVP_PKEY_up_ref(EVP_PKEY *key);
 void EVP_PKEY_free(EVP_PKEY *key);



DESCRIPTION

The EVP_PKEY_new() function allocates an empty EVP_PKEY structure which is used by OpenSSL to store private keys. The reference count is set to 1.

EVP_PKEY_up_ref() increments the reference count of key.

EVP_PKEY_free() decrements the reference count of key and, if the reference count is zero, frees it up. If key is NULL, nothing is done.

NOTES

The EVP_PKEY structure is used by various OpenSSL functions which require a general private key without reference to any particular algorithm.

The structure returned by EVP_PKEY_new() is empty. To add a private key to this empty structure the functions described in EVP_PKEY_set1_RSA(3) should be used.

RETURN VALUES

EVP_PKEY_new() returns either the newly allocated EVP_PKEY structure or NULL if an error occurred.

EVP_PKEY_up_ref() and EVP_PKEY_free() do not return a value.

SEE ALSO

EVP_PKEY_set1_RSA(3)

HISTORY

EVP_PKEY_new() and EVP_PKEY_free() exist in all versions of OpenSSL.

EVP_PKEY_up_ref() was first added to OpenSSL 1.1.0.

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1.1.0-pre3 EVP_PKEY_NEW (3) 2016-02-15

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