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Minor improvements

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This commit is contained in:
Hanno Becker 2018-12-12 14:00:26 +00:00
parent ae2ff02ff1
commit e463c42902
2 changed files with 8 additions and 7 deletions
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13
include/mbedtls/chacha20.h
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@ -82,7 +82,8 @@ mbedtls_chacha20_context;
* to \c mbedtls_chacha20_update(), and finally to
* \c mbedtls_chacha20_free().
*
* \param ctx The ChaCha20 context to initialize. Must not be \c NULL.
* \param ctx The ChaCha20 context to initialize.
* This must not be \c NULL.
*/
void mbedtls_chacha20_init( mbedtls_chacha20_context *ctx );
@ -90,7 +91,9 @@ void mbedtls_chacha20_init( mbedtls_chacha20_context *ctx );
* \brief This function releases and clears the specified ChaCha20 context.
*
* \param ctx The ChaCha20 context to clear. May be \c NULL,
* in which case this function is a no-op.
* in which case this function is a no-op. If it is not
* \c NULL, it must point to an initialized context.
*
*/
void mbedtls_chacha20_free( mbedtls_chacha20_context *ctx );
@ -103,7 +106,7 @@ void mbedtls_chacha20_free( mbedtls_chacha20_context *ctx );
* \c mbedtls_chacha_update().
*
* \param ctx The ChaCha20 context to which the key should be bound.
* Must be initialized.
* It must be initialized.
* \param key The encryption/decryption key. Must be 32 bytes in length.
*
* \return \c 0 on success.
@ -123,7 +126,7 @@ int mbedtls_chacha20_setkey( mbedtls_chacha20_context *ctx,
* messages encrypted with the same nonce and key.
*
* \param ctx The ChaCha20 context to which the nonce should be bound.
* Must be initialized.
* It must be initialized and bound to a key.
* \param nonce The nonce. Must be 12 bytes in size.
* \param counter The initial counter value. This is usually 0.
*
@ -153,7 +156,7 @@ int mbedtls_chacha20_starts( mbedtls_chacha20_context* ctx,
* key and nonce.
*
* \param ctx The ChaCha20 context to use for encryption or decryption.
* Must be initialized.
* It must be initialized and bound to a key and nonce.
* \param size The length of the input data in bytes.
* \param input The buffer holding the input data.
* This pointer can be \c NULL if `size == 0`.

2
library/chachapoly.c
View file

@ -179,9 +179,7 @@ int mbedtls_chachapoly_update_aad( mbedtls_chachapoly_context *ctx,
CHACHAPOLY_VALIDATE_RET( aad_len == 0 || aad != NULL );
if( ctx->state != CHACHAPOLY_STATE_AAD )
{
return( MBEDTLS_ERR_CHACHAPOLY_BAD_STATE );
}
ctx->aad_len += aad_len;