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PrismKit

RSA Encrypt and Sign

Local

Encrypt, decrypt, sign and verify text with RSA keys using RSA-OAEP, PKCS#1 v1.5 or PSS with SHA-256.

Text Encryption

Encrypt or decrypt a message with a passphrase using AES, TripleDES, Rabbit, or RC4.

Shamir Secret Sharing

Split a secret into N shares so that any K of them can rebuild it, and combine shares back into the secret.