A non-ASN.1 encoded form for DSA and ECDSA signatures has been implemented. This new signature output format concatenates the r and s values from the signature in conformance with IEEE P1363. Signature objects using this format must provide one of the following algorithm Strings to the Signature.getInstance() method:

For DSA:
NONEwithDSAinP1363Format
SHA1withDSAinP1363Format
SHA224withDSAinP1363Format
SHA256withDSAinP1363Format
 
For ECDSA:
NONEwithECDSAinP1363Format
SHA1withECDSAinP1363Format
SHA224withECDSAinP1363Format
SHA256withECDSAinP1363Format
SHA384withECDSAinP1363Format
SHA512withECDSAinP1363Format