How to produce XML signature with no whitespaces and line-breaks in Java?

Question

I work with the brazilian \"Nota Fiscal Eletronica\" project, in which they define a standart way to sign XML documents.

Recently, they started to require that there

Answer 1

the signature blocks are encoding binary information as Base64, which must follow some formating including line breaks (see http://en.wikipedia.org/wiki/Base64). So you simply can't remove them without alter the information.

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