Crypto - Tools for Encryption & Cryptography for Android

Crypto - The unique cryptography app with numerous & useful features

Suitable for learning, testing & applying.

Explore cryptography - the magic behind cryptocurrencies like Bitcoin or Ethereum. Now with Blockchain related features. More coming soon!

Features

Encryption

Hashing

Encoding/Decoding

Mathematical functions

Secure Communication Tools (Certificates & Key Exchange)

Analysis

Tools

This makes Crypto unique:

Beautiful & modern Material Design

Useful implemented features

Info pages for a lot of functions (implementation details etc.)

Sharing/Copy-pasting your texts & content made very easy & powerful

Save frequently used functions as favorites

Powerful Secure Communication Tools as an approach to provide secure encryption as a security add-on for every untrusted messaging or email service

Cryptographic functions

Encryption

Caesar

Vigenre

Skytale

DES

AES

Blowfish

Twofish

RC4

Salsa20

ChaCha

Analysis Functions

Frequency Analysis

Caesar Brute Force

Factorization

Prime Search

Find Divisors

Convert RSA modulus

Decode PEM certificate

Asymmetric Methods

Diffie Hellman

RSA

DSA

El Gamal

Mathematics

Prime test (Fermat, Miller Rabin)

Euler toitent function

GCD (Euklid) & Multiplicative Inverse in a Field

Hash

MD2

MD4

MD5

RIPEMD

SHA-1

SHA-2

SHA-3

Tiger

Whirlpool

Gost3411

HMAC - Keyed-Hash Message Authentication Code

MD2

MD4

MD5

SHA1

SHA2

Tiger

Whirlpool

Gost3411

MAC - Message Authentication Code

Skein

Poly1305

CMAC

KDF - Key Derivation Function

HKDF

Scrypt

Encoding

Base64

Base58

Hexadecimal

Binary

URL

Decoding

Base64

Base58

Hexadecimal

URL

Tools

Export your PEM certificate(.pem .crt .cert .cer)

QR code generator

QR code decoder

Advanced Base64 Encoding/Decoding

Bitcoin Address Generator

Secure Communication Tools

Authentication (RSA certificates)

Key Exchange (RSA Public Key Block Cipher Encryption)

Encryption (AES-256)

What can you do with Crypto?

Encrypt your messages for WhatsApp, Facebook, Telegram and other messengers

Encrypt your texts to securely store or send them

Save your passwords as hash

Learning support with mathematical DH and RSA implementations

Mathematical functions also suitable as everyday helpers

Some special use cases for Secure Communication Tools:

RSA Certificates

Share your certificate to prove your identity

You can securely & easily exchange secrets, passwords or session keys with RSA public keys included in the certificates

RSA Key Exchange

Transfer your bank account number securely

Share access codes (e.g. PDF passwords, Cloud access passwords) securely

Exchange a session key for AES Encryption

AES Encryption

Encrypt your text messages securely and share them (AES recommended instead of RSA because of performance)

Feedback

If you have any problems, suggestions or questions, please email to cryptotools.app@gmail.com

Also leave a positive rating if you like the app. Thank you!

If there is anything you don't like about this app, please tell me what it is and why.