mbedtls_pem_write_buffer() function

Write a buffer of PEM information from a DER encoded buffer.

Syntax

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Summary

Declaration

Definition

from pem.h:151

int mbedtls_pem_write_buffer(const char *header, const char *footer, const unsigned char *der_data, size_t der_len, unsigned char *buf, size_t buf_len, size_t *olen);

Implemented in pem.c:498

Arguments

Argument

Description

The header string to write.

The footer string to write.

der_data

The DER data to encode.

der_len

The length of the DER data \p der_data in Bytes.

buf

The buffer to write to.

buf_len

The length of the output buffer \p buf in Bytes.

olen

The address at which to store the total length written or required (if \p buf_len is not enough).

Return value

\c 0 on success. #MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL if \p buf isn't large enough to hold the PEM buffer. In this case, `*olen` holds the required minimum size of \p buf. Another PEM or BASE64 error code on other kinds of failure.

Notes

You may pass \c NULL for \p buf and \c 0 for \p buf_len to request the length of the resulting PEM buffer in `*olen`. This function may be called with overlapping \p der_data and \p buf buffers.