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(SQL Server) Duplicate openssl rsautl -sign -in small.dat -inkey private.pem -out rsautl.sigDemonstrates how to duplicate this OpenSSL command: openssl rsautl -sign -in small.dat -inkey private.pem -out rsautl.sigThe small.dat file is a small file that can contain text or binary data of any type. The "openssl rsautl" command is different than "openssl dgst -sign" because it signs the input data directly with the RSA algorithm. The "openssl dgst -sign" command first digests the input data and then signs the digest. How much data can be signed with "openssl rsautl"? The maximum size (in bytes) is the key size minus the overhead for the padding. The overhead size depends on the padding. With OAEP padding, the overhead is 42 bytes. With the default PKCSv1.5 padding, the overhead is 11 bytes. Given a 2048-bit RSA key (256 bytes) and using PKCSv1.5 padding, the max data size that can be signed is 256 - 11 = 245 bytes.
// Important: See this note about string length limitations for strings returned by sp_OAMethod calls. // CREATE PROCEDURE ChilkatSample AS BEGIN END GO |
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