asn1_write documentation: say that integers must be non-negative
The documentation never said it explicitly, but the ASN.1 library
doesn't support negative integers. Say it explicitly.
Also fix a copypasta error.
@@ -100,6 +100,7 @@ int mbedtls_asn1_write_raw_buffer( unsigned char **p, unsigned char *start,
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param X The MPI to write.
+ * It must be non-negative.
*
* \return The number of bytes written to \p p on success.
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
@@ -184,6 +185,7 @@ int mbedtls_asn1_write_bool( unsigned char **p, unsigned char *start,
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param val The integer value to write.
+ * It must be non-negative.
*
* \return The number of bytes written to \p p on success.
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
@@ -232,7 +234,7 @@ int mbedtls_asn1_write_printable_string( unsigned char **p,
/**
* \brief Write a UTF8 string in ASN.1 format using the UTF8String
- * string encoding tag (#MBEDTLS_ASN1_PRINTABLE_STRING).
+ * string encoding tag (#MBEDTLS_ASN1_UTF8_STRING).
*
* \note This function works backwards in data buffer.
*
