Read a SubjectPublicKeyInfo public key from a PEM FILE with a library context.

Synopsis

Declared in <openssl/pem.h>

EVP_PKEY*
PEM_read_PUBKEY_ex(
    FILE* fp,
    EVP_PKEY** x,
    pem_password_cb* cb,
    void* u,
    OSSL_LIB_CTX* libctx,
    char const* propq);

Return Value

Public key on success, or NULL on failure.

Parameters

Name

Description

fp

FILE to read from.

x

Optional address of an EVP_PKEY pointer to reuse, or NULL.

cb

Password callback for encrypted PEM, or NULL.

u

Application data passed to cb.

libctx

Library context used for provider‐backed decoding, or NULL for the default.

propq

Property query for algorithm fetches, or NULL.

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