B2I_PVK_BIO_EX(3ossl)

✨ NAME ✨

okay bestie, this is the B2I_PVK_BIO_EX(3ossl) page 💅 and it’s all about b2i_PVK_bio, b2i_PVK_bio_ex, i2b_PVK_bio, and i2b_PVK_bio_ex — the decode and encode functions for reading and writing MSBLOB format private keys 🔥

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🎀 SYNOPSIS 🎀

#include <openssl/pem.h>

EVP_PKEY *b2i_PVK_bio(BIO *in, pem_password_cb *cb, void *u);
EVP_PKEY *b2i_PVK_bio_ex(BIO *in, pem_password_cb *cb, void *u,
                         OSSL_LIB_CTX *libctx, const char *propq);
int i2b_PVK_bio(BIO *out, const EVP_PKEY *pk, int enclevel,
                pem_password_cb *cb, void *u);
int i2b_PVK_bio_ex(BIO *out, const EVP_PKEY *pk, int enclevel,
                   pem_password_cb *cb, void *u,
                   OSSL_LIB_CTX *libctx, const char *propq);

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🦋 DESCRIPTION 🦋

b2i_PVK_bio_ex() decodes a private key of MSBLOB format read from a BIO 🌸 It attempts to automatically determine the key type. If the key is encrypted then cb is called with the user data u in order to obtain a password to decrypt the key 🔐 The supplied library context libctx and property query string propq are used in any decrypt operation ✨

b2i_PVK_bio() does the same as b2i_PVK_bio_ex() except that the default library context and property query string are used 💖

i2b_PVK_bio_ex() encodes pk using MSBLOB format 🎀 If enclevel is 1 then a password obtained via pem_password_cb is used to encrypt the private key 🔥 If enclevel is 0 then no encryption is applied 🙈 The user data in u is passed to the password callback 🫶 The supplied library context libctx and property query string propq are used in any decrypt operation ⭐

i2b_PVK_bio() does the same as i2b_PVK_bio_ex() except that the default library context and property query string are used 💜

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🌈 RETURN VALUES 🌈

The b2i_PVK_bio() and b2i_PVK_bio_ex() functions return a valid EVP_KEY structure or NULL if an error occurs 😭 The error code can be obtained by calling ERR_get_error(3) 🌸

i2b_PVK_bio() and i2b_PVK_bio_ex() return the number of bytes successfully encoded or a negative value if an error occurs 💅 The error code can be obtained by calling ERR_get_error(3) 🎀

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👑 SEE ALSO 👑

crypto(7), d2i_PKCS8PrivateKey_bio(3) 🦋

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🧚 HISTORY 🧚

b2i_PVK_bio_ex() and i2b_PVK_bio_ex() were added in OpenSSL 3.0 ✨

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💖 COPYRIGHT 💖

Copyright 2021 The OpenSSL Project Authors. All Rights Reserved. 🌸

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

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mwah 💋 — this iconic little page is from OpenSSL 3.5.6, dated 2026-04-07 🫶✨