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SourceVuESP-IDF Framework and ExamplesmbedTLSmbedtls_sha256()

mbedtls_sha256() function

This function calculates the SHA-224 or SHA-256 checksum of a buffer. The function allocates the context, performs the calculation, and frees the context. The SHA-256 result is calculated as output = SHA-256(input buffer).

Syntax

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Summary

Declaration

Definition

from sha256.h:167

int mbedtls_sha256(const unsigned char *input, size_t ilen, unsigned char *output, int is224);

Implemented in sha256.c:773

Arguments

Argument

Description

input

The buffer holding the data. This must be a readable buffer of length \p ilen Bytes.

ilen

The length of the input data in Bytes.

output

The SHA-224 or SHA-256 checksum result. This must be a writable buffer of length \c 32 bytes for SHA-256, \c 28 bytes for SHA-224.

is224

Determines which function to use. This must be either \c 0 for SHA-256, or \c 1 for SHA-224.

Return value

\c 0 on success. A negative error code on failure.

Examples

mbedtls_sha256() is referenced by 2 libraries and example projects:

ESP-IDF

aligenie_demo sample

References

from 0/2 examples

Code

Location

Referrer

int mbedtls_sha256(const unsigned char *input,

sha256.c:773

int mbedtls_sha256(const unsigned char *input,

sha256.h:167

return mbedtls_sha256(input, ilen, output, 1);

md.c:717

mbedtls_md()

return mbedtls_sha256(input, ilen, output, 0);

md.c:721

mbedtls_md()

Call Tree

from 0/2 examples

mbedtls_sha256() is called by 1 function and calls 5 functions:

mbedtls_md()

mbedtls_sha256()

mbedtls_sha256_starts()

mbedtls_sha256_update()

mbedtls_sha256_finish()

mbedtls_sha256_init()

mbedtls_sha256_free()

Data Use

from 0/2 examples

mbedtls_sha256():

mbedtls_sha256()

Class Tree

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Override Tree

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Implementations

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Instances

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Lifecycle

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