- outbuf
- the buffer to store the signature.
- offset
- the index of the first byte in outbuf to store.
- len
- the number of bytes allocated for the signature.
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Type Reason Java.Security.SignatureException if this SignatureSpi instance is not initialized properly. Java.Lang.IllegalArgumentException if offset or len are not valid in respect to outbuf.
Generates and stores the signature of all updated data in the provided byte[] at the specified position with the specified length.
This SignatureSpi instance is reset to the state of its last initialization for signing and thus can be used for another signature from the same identity.