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5.3 Canonicalisation A digital signature operates on binary data. An XML document is a sequence of textual objects which may have many equivalent binary representations. This section specifies how it is ensured that the binary data being passed to the digital signature is identical each time the signature is calculated and verified. 5.3.1 VERS mechanism All whitespace is removed from the characters selected in section 5.2.1. Whitespace is defined as the Unicode characters: tab U+0x0009, carriage return U+0x000D, line feed U+0x000A, and space U+0x0020. All remaining characters are passed to the digital signature encoded as UTF-8. UTF-8 is defined in section 3.8 of [Unicode] or the equivalent ISO standard. | |||||
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