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SourceVuSTM32 Libraries and SamplesmbedTLSmbedtls_pem_read_buffer()

mbedtls_pem_read_buffer() function

Read a buffer for PEM information and store the resulting data into the specified context buffers.

Syntax

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Summary

Declaration

Definition

int mbedtls_pem_read_buffer( mbedtls_pem_context *ctx, const char *header, const char *footer, const unsigned char *data, const unsigned char *pwd, size_t pwdlen, size_t *use_len );

Implemented in pem.c:230

Arguments

Argument

Description

ctx

context to use

header string to seek and expect

footer string to seek and expect

data

source data to look in (must be nul-terminated)

pwd

password for decryption (can be NULL)

pwdlen

length of password

use_len

destination for total length used (set after header is correctly read, so unless you get MBEDTLS_ERR_PEM_BAD_INPUT_DATA or MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT, use_len is the length to skip)

Return value

0 on success, or a specific PEM error code

Notes

Attempts to check password correctness by verifying if the decrypted text starts with an ASN.1 sequence of appropriate length

References

Code

Location

Referrer

int mbedtls_pem_read_buffer( mbedtls_pem_context *ctx, const char *header, const char *footer,

int mbedtls_pem_read_buffer( mbedtls_pem_context *ctx, const char *header, const char *footer,

ret = mbedtls_pem_read_buffer( &pem,

mbedtls_pk_parse_key()

ret = mbedtls_pem_read_buffer( &pem,

mbedtls_pk_parse_key()

ret = mbedtls_pem_read_buffer( &pem,

mbedtls_pk_parse_public_key()

ret = mbedtls_pem_read_buffer( &pem,

x509_crt.c:1182

mbedtls_x509_crt_parse()

Call Tree

mbedtls_pem_read_buffer() is called by 3 functions and calls 2 functions:

mbedtls_pk_parse_key()

mbedtls_pk_parse_public_key()

mbedtls_x509_crt_parse()

mbedtls_pem_read_buffer()

mbedtls_platform_zeroize()

mbedtls_base64_decode()

Data Use

mbedtls_pem_read_buffer() writes 2 variables:

mbedtls_pem_read_buffer()

mbedtls_pem_context::buf

mbedtls_pem_context::buflen

Class Tree

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Override Tree

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Implementations

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Instances

Lifecycle

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