Hi Marko, OK, > These two operations are not equivalent. But... Can I have this operation done in the Stored Procedure inside the Database? Plain SHA1, which is signed with RSA signature. and in the end encoded to base64? I was looking in the pgcrypto functions, and I havenÂt found any that I could use.... I think... Maybe I am not looking for the rigth one. I need to use Plain SHA1 signed with a RSA signature and encoded into base64 due to a new law related to digital signature in invoices in my country. -- Luis -- View this message in context: http://postgresql.1045698.n5.nabble.com/Problem-with-encode-and-hmac-in-pgcrypto-tp3366420p3367159.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general