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added pkcs 7 padding algo #110

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1 change: 1 addition & 0 deletions Contributor.md
Original file line number Diff line number Diff line change
Expand Up @@ -13,3 +13,4 @@
* [Shubham Prateek](https://github.com/Shubham-Prateek)
* [Divyanshi Agarwal](https://github.com/Divyanshi29)
* [Shreya Punetha](https://github.com/shreyapuntha)
* [Careless Finch](https://github.com/carelessfinch)
13 changes: 13 additions & 0 deletions Python/pkcs_7_pad.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
def pad(inp, size):
nos = size - len(inp) % size if len(inp)%size!=0 else size
return bytes(inp) + (chr(nos)*nos).encode()

def depad(inp):
return inp[:len(inp)-inp[len(inp)-1]]

if __name__=="__main__":
n=int(input("1.Pad\n2.Depad\nChoice: "))
if n==1:
print(pad(input("Enter text to pad: ").encode(),16))
if n==2:
print(depad(input("Enter text to depad: ").encode()))