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https://github.com/aidatorajiro/crypto

crypto fun repository
https://github.com/aidatorajiro/crypto

bitcoin crypto cryptography ecdsa elliptic-curves ethereum http2 learning-with-errors monoalphabetic pari-gp postquantum python python3 segwit solidity ssl tls13

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crypto fun repository

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README 

        
# my crypto works



My codes on crypto.



# contents



## Misc



- README.md - this file

- fft.py - Fast Fourier Transform (WIP)

- package.json - package.json for `.js` files

- nanndah.py - key exchange (WIP)

- shadh.py - key exchange (WIP)

- general.py - general encryption system



## Elliptic Curve



- EC.sol - ECDSA in JS.

- EC2.sol - Elliptic Curve compution in Solidity.

- EC_test.js - Elliptic Curve test file

- ec.js - Elliptic curve address generation

- gp.gp - PARI/GP elliptic curve pairing

- zcash.gp - PARI/GP zcash (WIP)

- mont_to_wiel.gp - montgomery curve to weierstrass curve



### Python Fullscratch Project



These python scripts are greatly helped by the stackoverflow post : . And here:  



- fullscratch_pairing_weil.py - fullscratch weil pairing.

- fullscratch_pairing_tate.py - fullscratch tate pairing.

- fullscratch.py - fullscratch ECDSA in python.

- fullscratch_address.py - fullscratch ECDSA address generation in python.

- fullscratch_elgamal.py - fullscratch EC elgamal in python. (WIP?)

- fullscratch_mod_elgamal.py - fullscratch EC modified elgamal in python.

- fullscratch_pairing.py - fullscratch EC pairing in python. (WIP?)

- fullscratch_takusan.py - fullscratch ECDSA in python (infinite loop).

- fullscratch_zcash.py - fullscratch zcash in python (WIP)

- fullscratch_zcash_2.py - fullscratch zcash in python (WIP)

- fullscratch_zero_prf.py - fullscratch elliptic curve zero knowledge proof in python.

- projection.py - fullscratch EC addition / multiplication / pairing. Using projection to improve performance.



## Blockchain

- HomomorphicTransaction.sol - additive homomorphic transaction in solidity

- HomomorphicTransaction_test.js - additive homomorphic transaction in solidity

- NestedSign.sol - ECDSA verifier in Solidity. Signed message in signed Ethereum transaction!

- bech32.js - copy of bech32.js by Pieter Wuille

- btc_wallet.js - bitcoin wallet

- eth_wallet.js - Ethereum wallet

- eth_wallet_2.js - Ethereum wallet (WIP)

- segwit_addr.js - SegWit address

- zclib.py - ZCash transaction parse library

- zcrpc.py - ZCash RPC



## Statistics and Machine Learning over a Finite Field

- kusa.py - mean, variance, Standard deviation (if exists) in a finite field

- kusa2.py - polynomial fitting over a finite field, using numpy

- kusa3.py - polynomial fitting (without loss) over a finite field, pure python Oddly faster than kusa2.py.

- kusa3.test.py - tests of kusa3.py

- kusa4.py - polynomial fitting (with loss) over a finite field, pure python (WIP)

- kusa4.test.py - tests of kusa4.py



## Learning with Error

- lwe_sugoi.py - Learning with error cryptosystem in python (requires library mpmath).



## Post-Quantum RSA (multi prime RSA)

- pqrsa.py - key generation

- pqrsa_decr.py - decrypt

- pqrsa_decr_2.py - decrypt



## Monoalphabetic Substitution Cryptosystem

- mono_decr.py - Simple decryptor.

- mono_kaiseki.py - Count each characters

- mono_shuukei.py - Count consecutive characters.

- monosol - Graphical monoalphabetic substitution solver using Vue.js. 



### Decrypting Romaji Ciphertext

- KWDLC - You have to download this from  in order to run `mono_kana*.py`.

- mono_kana_cipher.txt - Ciphertext input for `mono_kana*.py`. You have to create this file.

  `"\n"` (LF) can be used as a separator.

- mono_kana_setting.py - Setting for `mono_kana*.py`. You have to create this file.

  Set the contents to `cipher_char_whitelist = ""`.  

  `cipher_char_whitelist` must be 23 character length.

- mono_kana1.py - Count each characters from KWDLC

- mono_kana2.py - PCA Analysis of neighbor count (separated matrix)

- mono_kana3.py - PCA Analysis of neighbor count (concatenated matrix)

- mono_kana4.py - PCA Analysis of neighbor count (separated matrix, use different normalization)

- mono_kana5.py - PCA Analysis of neighbor count (separated matrix, mono_kana_setting.py not needed)



## TLS 1.3 (X25519, EMSA_PSS_VERIFY, etc.)

- ssl.gp - fullscratch TLS 1.3 related program (WIP?)

- ssl2.gp - fullscratch TLS 1.3 related program (WIP?)

- tls13.py - fullscratch TLS 1.3 related program (WIP?)



## HTTP/2



- muzukasisa.txt - Not actually crypto but obfuscation? Attempt to "netcat" (although using openssl so not completely full-scratch) HTTP/2 connection. Not working for now...