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SourceVuESP-IDF Framework and ExamplesmbedTLSmbedtls_asn1_get_alg_null()

mbedtls_asn1_get_alg_null() function

Retrieve an AlgorithmIdentifier ASN.1 sequence with NULL or no params. Updates the pointer to immediately behind the full AlgorithmIdentifier.

Syntax

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Summary

Declaration

Definition

from asn1.h:581

int mbedtls_asn1_get_alg_null(unsigned char **p, const unsigned char *end, mbedtls_asn1_buf *alg);

Implemented in asn1parse.c:399

Arguments

Argument

Description

On entry, \c *p points to the start of the ASN.1 element. On successful completion, \c *p points to the first byte beyond the AlgorithmIdentifier element. On error, the value of \c *p is undefined.

end

End of data.

alg

The buffer to receive the OID.

Return value

0 if successful or a specific ASN.1 or MPI error code.

References

Code

Location

Referrer

int mbedtls_asn1_get_alg_null(unsigned char **p,

asn1parse.c:399

int mbedtls_asn1_get_alg_null(unsigned char **p,

asn1.h:581

if ((ret = mbedtls_asn1_get_alg_null(&p, end, &prf_alg_oid)) != 0) {

pkcs5.c:88

pkcs5_parse_pbkdf2_params()

if ((ret = mbedtls_asn1_get_alg_null(p, end, alg)) != 0) {

pkcs7.c:123

pkcs7_get_digest_algorithm()

ret = mbedtls_asn1_get_alg_null(p, end, alg);

pkcs7.c:148

pkcs7_get_digest_algorithm_set()

if ((ret = mbedtls_asn1_get_alg_null(p, end, alg)) != 0) {

x509.c:102

mbedtls_x509_get_alg_null()

Call Tree

mbedtls_asn1_get_alg_null() is called by 4 functions and calls 1 function:

pkcs5_parse_pbkdf2_params()

pkcs7_get_digest_algorithm()

pkcs7_get_digest_algorithm_set()

mbedtls_x509_get_alg_null()

mbedtls_asn1_get_alg_null()

mbedtls_asn1_get_alg()

Data Use

mbedtls_asn1_get_alg_null() reads 2 variables:

mbedtls_asn1_buf::tag

mbedtls_asn1_buf::len

mbedtls_asn1_get_alg_null()

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