![]() ![]() ![]() Since `opad' and `ipad' must be unibyte, we have to string from a vector of characters with eight bit. `concat' of Emacs23 (and later?) generates a multi-byte (aset opad i (logxor (aref opad i) (aref key-block i)))) (aset ipad i (logxor (aref ipad i) (aref key-block i))) (dotimes (i hmac-sha1-block-size-bytes ) (ipad (make-vector hmac-sha1-block-size-bytes #x36))) (let ((opad (make-vector hmac-sha1-block-size-bytes #x5c)) (let ((key-block (make-vector hmac-sha1-block-size-bytes 0))) (when (< hmac-sha1-block-size-bytes (length key)) (let (( hmac-sha1-block-size-bytes 64)) SHA-1 uses 512-bit blocks through the hash algorithm and use the hashed value (strange instead, we initialize the key block with zeroes and copy the If the key is too small, we pad it with zeroes (or The key block is always exactly the block size of the hash (error "message %s must be unibyte" message)) `encode-coding-string' calls just return the same string." (unibyte-value (encode-coding-string value 'utf-8 t)))įor keys and values that are already unibyte, the (let ((unibyte-key (encode-coding-string key 'utf-8 t)) Most callers will want to use UTF-8Įncoding, which we can generate as follows: Instead, callers must explicitly pick and use an encoding for This makes multibyte strings useless for generating However, internal 8-bit values don'tĬorrespond to any external representation \(at least for major The Emacs multibyte representation actually uses a series ofĨ-bit values under the hood, so we could have allowed multibyte `base64-encode-string' to produce human-readable output. Use the function `encode-hex-string' or the function ![]() "Return an HMAC-SHA1 authentication code for KEY and MESSAGE. Copyright: This code is in the public domain. `encode-coding-string' calls just return the same string. For keys and values that are already unibyte, the (unibyte-value (encode-coding-string value 'utf-8 t))) encoding, which we can generate as follows: correspond to any external representation \(at least for major 8-bit values under the hood, so we could have allowed multibyte The Emacs multibyte representation actually uses a series of KEY and MESSAGE must be unibyte strings. Return an HMAC-SHA1 authentication code for KEY and MESSAGE. A small function for generating HMAC-SHA1 authentication signatures from strings. ![]()
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