- <para>This signature format encodes the <code>(r, s)</code> tuple as the concatenation of the big-endian representation of <code>r</code> and the big-endian representation of <code>s</code>, each value encoding using the number of bytes required for encoding the maximum integer value in the key's mathematical field. For example, an ECDSA signature from the curve <code>secp521r1</code>, a 521-bit field, encodes each of <code>r</code> and <code>s</code> as 66 bytes, producing a signature output of 132 bytes.</para>
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