feat(crypto): Add documentation comments for the package

Author: kuafuRace

crypto/cipher/cipher.go

@@ -1,3 +1,6 @@
+// Package cipher provides cryptographic cipher configuration and base functionality.
+// It supports various symmetric encryption algorithms with different block modes,
+// padding schemes, and streaming capabilities for secure data encryption and decryption.
 package cipher
 
 import "crypto/cipher"

crypto/ed25519/ed25519.go

@@ -1,3 +1,6 @@
+// Package ed25519 implements ED25519 digital signature generation and verification with streaming support.
+// It provides ED25519 operations using the standard ED25519 algorithm with support
+// for high-performance digital signatures and verification.
 package ed25519
 
 import (

crypto/keypair/ed25519.go

@@ -1,5 +1,3 @@
-// Package keypair provides ED25519 key pair management functionality.
-// It supports key generation, formatting, parsing, and manipulation for PKCS8 format.
 package keypair
 
 import (

crypto/keypair/keypair.go

@@ -1,3 +1,6 @@
+// Package keypair provides cryptographic key pair management functionality.
+// It supports key generation, formatting, parsing, and manipulation for various
+// cryptographic algorithms with different key formats.
 package keypair
 
 // KeyFormat represents the format of RSA keys.

crypto/rsa/rsa.go

@@ -1,3 +1,6 @@
+// Package rsa implements RSA encryption, decryption, signing, and verification with streaming support.
+// It provides RSA operations using the standard RSA algorithm with support
+// for different key sizes and various padding schemes.
 package rsa
 
 import (