feat(crypto): pkc algos for key generation, encrypt, and decrypt (#1663)

packages/sncrypto-common/src/Types/PkcKeyPair.ts

@@ -0,0 +1,7 @@
+import { HexString } from './HexString'
+
+export type PkcKeyPair = {
+  keyType: 'curve25519' | 'ed25519' | 'x25519'
+  privateKey: HexString
+  publicKey: HexString
+}

packages/sncrypto-common/src/Types/index.ts

@@ -8,3 +8,4 @@ export * from './StreamDecryptorResult'
 export * from './StreamEncryptor'
 export * from './Unencrypted'
 export * from './Utf8String'
+export * from './PkcKeyPair'