npub1ts…khtk4 on Nostr: PGP (Pretty Good Privacy) uses the RSA (Rivest–Shamir–Adleman) signature scheme ...

PGP (Pretty Good Privacy) uses the RSA (Rivest–Shamir–Adleman) signature scheme for digital signatures. RSA is a widely used public-key cryptosystem that is used for secure data transmission, digital signatures, and other cryptographic applications. PGP also supports DSA (Digital Signature Algorithm) and ECDSA (Elliptic Curve Digital Signature Algorithm) as signature schemes.