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Merge pull request #3160 from gilles-peskine-arm/hkdf_expand-initialize_t-development

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hkdf_expand: explicitly initialize t
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Gilles Peskine 2020-04-06 16:34:31 +02:00 committed by GitHub
parent 6d41f4cc42 3ab121a603
commit 54e1c30d1b
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 2 deletions
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library/hkdf.c
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@ -115,7 +115,7 @@ int mbedtls_hkdf_expand( const mbedtls_md_info_t *md, const unsigned char *prk,
n = okm_len / hash_len;
if( (okm_len % hash_len) != 0 )
if( okm_len % hash_len != 0 )
{
n++;
}
@ -136,6 +136,8 @@ int mbedtls_hkdf_expand( const mbedtls_md_info_t *md, const unsigned char *prk,
goto exit;
}
memset( t, 0, hash_len );
/*
* Compute T = T(1) | T(2) | T(3) | ... | T(N)
* Where T(N) is defined in RFC 5869 Section 2.3