Node / ReticulumProjects / Reticulum_CE.git / files / RNS / Cryptography / SHA256.py

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T8b949e# MIT License

T8b949e#

T8b949e# Copyright (c) 2017 Thomas Dixon

T8b949e#

T8b949e# Permission is hereby granted, free of charge, to any person obtaining a copy

T8b949e# of this software and associated documentation files (the "Software"), to deal

T8b949e# in the Software without restriction, including without limitation the rights

T8b949e# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

T8b949e# copies of the Software, and to permit persons to whom the Software is

T8b949e# furnished to do so, subject to the following conditions:

T8b949e#

T8b949e# The above copyright notice and this permission notice shall be included in all

T8b949e# copies or substantial portions of the Software.

T8b949e#

T8b949e# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

T8b949e# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

T8b949e# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

T8b949e# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

T8b949e# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

T8b949e# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

T8b949e# SOFTWARE.

Tff7b72import T7ee787copy

Tff7b72import T7ee787struct

Tff7b72import T7ee787sys

Tff7b72def Td2a8ffnewTb4b4b4(Te6edf3mTff7b72=Tff7b72NoneTb4b4b4)Tb4b4b4:

Tff7b72return Te6edf3sha256Tb4b4b4(Te6edf3mTb4b4b4)

Tff7b72class T56d364sha256Tb4b4b4(Tffa657objectTb4b4b4)Tb4b4b4:

Te6edf3_k Tff7b72= Tb4b4b4(T79c0ff0x428a2f98Tb4b4b4, T79c0ff0x71374491Tb4b4b4, T79c0ff0xb5c0fbcfTb4b4b4, T79c0ff0xe9b5dba5Tb4b4b4,

T79c0ff0x3956c25bTb4b4b4, T79c0ff0x59f111f1Tb4b4b4, T79c0ff0x923f82a4Tb4b4b4, T79c0ff0xab1c5ed5Tb4b4b4,

T79c0ff0xd807aa98Tb4b4b4, T79c0ff0x12835b01Tb4b4b4, T79c0ff0x243185beTb4b4b4, T79c0ff0x550c7dc3Tb4b4b4,

T79c0ff0x72be5d74Tb4b4b4, T79c0ff0x80deb1feTb4b4b4, T79c0ff0x9bdc06a7Tb4b4b4, T79c0ff0xc19bf174Tb4b4b4,

T79c0ff0xe49b69c1Tb4b4b4, T79c0ff0xefbe4786Tb4b4b4, T79c0ff0x0fc19dc6Tb4b4b4, T79c0ff0x240ca1ccTb4b4b4,

T79c0ff0x2de92c6fTb4b4b4, T79c0ff0x4a7484aaTb4b4b4, T79c0ff0x5cb0a9dcTb4b4b4, T79c0ff0x76f988daTb4b4b4,

T79c0ff0x983e5152Tb4b4b4, T79c0ff0xa831c66dTb4b4b4, T79c0ff0xb00327c8Tb4b4b4, T79c0ff0xbf597fc7Tb4b4b4,

T79c0ff0xc6e00bf3Tb4b4b4, T79c0ff0xd5a79147Tb4b4b4, T79c0ff0x06ca6351Tb4b4b4, T79c0ff0x14292967Tb4b4b4,

T79c0ff0x27b70a85Tb4b4b4, T79c0ff0x2e1b2138Tb4b4b4, T79c0ff0x4d2c6dfcTb4b4b4, T79c0ff0x53380d13Tb4b4b4,

T79c0ff0x650a7354Tb4b4b4, T79c0ff0x766a0abbTb4b4b4, T79c0ff0x81c2c92eTb4b4b4, T79c0ff0x92722c85Tb4b4b4,

T79c0ff0xa2bfe8a1Tb4b4b4, T79c0ff0xa81a664bTb4b4b4, T79c0ff0xc24b8b70Tb4b4b4, T79c0ff0xc76c51a3Tb4b4b4,

T79c0ff0xd192e819Tb4b4b4, T79c0ff0xd6990624Tb4b4b4, T79c0ff0xf40e3585Tb4b4b4, T79c0ff0x106aa070Tb4b4b4,

T79c0ff0x19a4c116Tb4b4b4, T79c0ff0x1e376c08Tb4b4b4, T79c0ff0x2748774cTb4b4b4, T79c0ff0x34b0bcb5Tb4b4b4,

T79c0ff0x391c0cb3Tb4b4b4, T79c0ff0x4ed8aa4aTb4b4b4, T79c0ff0x5b9cca4fTb4b4b4, T79c0ff0x682e6ff3Tb4b4b4,

T79c0ff0x748f82eeTb4b4b4, T79c0ff0x78a5636fTb4b4b4, T79c0ff0x84c87814Tb4b4b4, T79c0ff0x8cc70208Tb4b4b4,

T79c0ff0x90befffaTb4b4b4, T79c0ff0xa4506cebTb4b4b4, T79c0ff0xbef9a3f7Tb4b4b4, T79c0ff0xc67178f2Tb4b4b4)

Te6edf3_h Tff7b72= Tb4b4b4(T79c0ff0x6a09e667Tb4b4b4, T79c0ff0xbb67ae85Tb4b4b4, T79c0ff0x3c6ef372Tb4b4b4, T79c0ff0xa54ff53aTb4b4b4,

T79c0ff0x510e527fTb4b4b4, T79c0ff0x9b05688cTb4b4b4, T79c0ff0x1f83d9abTb4b4b4, T79c0ff0x5be0cd19Tb4b4b4)

Te6edf3_output_size Tff7b72= T79c0ff8

Te6edf3blocksize Tff7b72= T79c0ff1

Te6edf3block_size Tff7b72= T79c0ff64

Te6edf3digest_size Tff7b72= T79c0ff32

Tff7b72def Tff7b72__init__Tb4b4b4(Tff7b72selfTb4b4b4, Te6edf3mTff7b72=Tff7b72NoneTb4b4b4)Tb4b4b4:

Tff7b72selfTff7b72.Td2a8ff_buffer Tff7b72= Ta5d6ffbTa5d6ff"Ta5d6ff"

Tff7b72selfTff7b72.Td2a8ff_counter Tff7b72= T79c0ff0

Tff7b72if Te6edf3m Tff7b72is Tff7b72not Tff7b72NoneTb4b4b4:

Tff7b72if Tffa657typeTb4b4b4(Te6edf3mTb4b4b4) Tff7b72is Tff7b72not Tffa657bytesTb4b4b4:

Tff7b72raise Tf85149TypeErrorTb4b4b4(Ta5d6ff'Tffd700%sTa5d6ff() argument 1 must be bytes, not Tffd700%sTa5d6ff' Tff7b72% Tb4b4b4(Tff7b72selfTff7b72.Td2a8ff__class__Tff7b72.Td2a8ff__name__Tb4b4b4, Tffa657typeTb4b4b4(Te6edf3mTb4b4b4)Tff7b72.Td2a8ff__name__Tb4b4b4)Tb4b4b4)

Tff7b72selfTff7b72.Td2a8ffupdateTb4b4b4(Te6edf3mTb4b4b4)

Tff7b72def Td2a8ff_rotrTb4b4b4(Tff7b72selfTb4b4b4, Te6edf3xTb4b4b4, Te6edf3yTb4b4b4)Tb4b4b4:

Tff7b72return Tb4b4b4(Tb4b4b4(Te6edf3x Tff7b72>> Te6edf3yTb4b4b4) Tff7b72| Tb4b4b4(Te6edf3x Tff7b72<< Tb4b4b4(T79c0ff32Tff7b72-Te6edf3yTb4b4b4)Tb4b4b4)Tb4b4b4) Tff7b72& T79c0ff0xFFFFFFFF

Tff7b72def Td2a8ff_sha256_processTb4b4b4(Tff7b72selfTb4b4b4, Te6edf3cTb4b4b4)Tb4b4b4:

Te6edf3w Tff7b72= Tb4b4b4[T79c0ff0Tb4b4b4]Tff7b72*T79c0ff64

Te6edf3wTb4b4b4[T79c0ff0Tb4b4b4:T79c0ff16Tb4b4b4] Tff7b72= Te6edf3structTff7b72.Td2a8ffunpackTb4b4b4(Ta5d6ff'Ta5d6ff!16LTa5d6ff'Tb4b4b4, Te6edf3cTb4b4b4)

Tff7b72for Te6edf3i Tff7b72in Tffa657rangeTb4b4b4(T79c0ff16Tb4b4b4, T79c0ff64Tb4b4b4)Tb4b4b4:

Te6edf3s0 Tff7b72= Tff7b72selfTff7b72.Td2a8ff_rotrTb4b4b4(Te6edf3wTb4b4b4[Te6edf3iTff7b72-T79c0ff15Tb4b4b4]Tb4b4b4, T79c0ff7Tb4b4b4) Tff7b72^ Tff7b72selfTff7b72.Td2a8ff_rotrTb4b4b4(Te6edf3wTb4b4b4[Te6edf3iTff7b72-T79c0ff15Tb4b4b4]Tb4b4b4, T79c0ff18Tb4b4b4) Tff7b72^ Tb4b4b4(Te6edf3wTb4b4b4[Te6edf3iTff7b72-T79c0ff15Tb4b4b4] Tff7b72>> T79c0ff3Tb4b4b4)

Te6edf3s1 Tff7b72= Tff7b72selfTff7b72.Td2a8ff_rotrTb4b4b4(Te6edf3wTb4b4b4[Te6edf3iTff7b72-T79c0ff2Tb4b4b4]Tb4b4b4, T79c0ff17Tb4b4b4) Tff7b72^ Tff7b72selfTff7b72.Td2a8ff_rotrTb4b4b4(Te6edf3wTb4b4b4[Te6edf3iTff7b72-T79c0ff2Tb4b4b4]Tb4b4b4, T79c0ff19Tb4b4b4) Tff7b72^ Tb4b4b4(Te6edf3wTb4b4b4[Te6edf3iTff7b72-T79c0ff2Tb4b4b4] Tff7b72>> T79c0ff10Tb4b4b4)

Te6edf3wTb4b4b4[Te6edf3iTb4b4b4] Tff7b72= Tb4b4b4(Te6edf3wTb4b4b4[Te6edf3iTff7b72-T79c0ff16Tb4b4b4] Tff7b72+ Te6edf3s0 Tff7b72+ Te6edf3wTb4b4b4[Te6edf3iTff7b72-T79c0ff7Tb4b4b4] Tff7b72+ Te6edf3s1Tb4b4b4) Tff7b72& T79c0ff0xFFFFFFFF

Te6edf3aTb4b4b4,Te6edf3bTb4b4b4,Te6edf3cTb4b4b4,Te6edf3dTb4b4b4,Te6edf3eTb4b4b4,Te6edf3fTb4b4b4,Te6edf3gTb4b4b4,Te6edf3h Tff7b72= Tff7b72selfTff7b72.Td2a8ff_h

Tff7b72for Te6edf3i Tff7b72in Tffa657rangeTb4b4b4(T79c0ff64Tb4b4b4)Tb4b4b4:

Te6edf3s0 Tff7b72= Tff7b72selfTff7b72.Td2a8ff_rotrTb4b4b4(Te6edf3aTb4b4b4, T79c0ff2Tb4b4b4) Tff7b72^ Tff7b72selfTff7b72.Td2a8ff_rotrTb4b4b4(Te6edf3aTb4b4b4, T79c0ff13Tb4b4b4) Tff7b72^ Tff7b72selfTff7b72.Td2a8ff_rotrTb4b4b4(Te6edf3aTb4b4b4, T79c0ff22Tb4b4b4)

Te6edf3maj Tff7b72= Tb4b4b4(Te6edf3a Tff7b72& Te6edf3bTb4b4b4) Tff7b72^ Tb4b4b4(Te6edf3a Tff7b72& Te6edf3cTb4b4b4) Tff7b72^ Tb4b4b4(Te6edf3b Tff7b72& Te6edf3cTb4b4b4)

Te6edf3t2 Tff7b72= Te6edf3s0 Tff7b72+ Te6edf3maj

Te6edf3s1 Tff7b72= Tff7b72selfTff7b72.Td2a8ff_rotrTb4b4b4(Te6edf3eTb4b4b4, T79c0ff6Tb4b4b4) Tff7b72^ Tff7b72selfTff7b72.Td2a8ff_rotrTb4b4b4(Te6edf3eTb4b4b4, T79c0ff11Tb4b4b4) Tff7b72^ Tff7b72selfTff7b72.Td2a8ff_rotrTb4b4b4(Te6edf3eTb4b4b4, T79c0ff25Tb4b4b4)

Te6edf3ch Tff7b72= Tb4b4b4(Te6edf3e Tff7b72& Te6edf3fTb4b4b4) Tff7b72^ Tb4b4b4(Tb4b4b4(Tff7b72~Te6edf3eTb4b4b4) Tff7b72& Te6edf3gTb4b4b4)

Te6edf3t1 Tff7b72= Te6edf3h Tff7b72+ Te6edf3s1 Tff7b72+ Te6edf3ch Tff7b72+ Tff7b72selfTff7b72.Td2a8ff_kTb4b4b4[Te6edf3iTb4b4b4] Tff7b72+ Te6edf3wTb4b4b4[Te6edf3iTb4b4b4]

Te6edf3h Tff7b72= Te6edf3g

Te6edf3g Tff7b72= Te6edf3f

Te6edf3f Tff7b72= Te6edf3e

Te6edf3e Tff7b72= Tb4b4b4(Te6edf3d Tff7b72+ Te6edf3t1Tb4b4b4) Tff7b72& T79c0ff0xFFFFFFFF

Te6edf3d Tff7b72= Te6edf3c

Te6edf3c Tff7b72= Te6edf3b

Te6edf3b Tff7b72= Te6edf3a

Te6edf3a Tff7b72= Tb4b4b4(Te6edf3t1 Tff7b72+ Te6edf3t2Tb4b4b4) Tff7b72& T79c0ff0xFFFFFFFF

Tff7b72selfTff7b72.Td2a8ff_h Tff7b72= Tb4b4b4[Tb4b4b4(Te6edf3xTff7b72+Te6edf3yTb4b4b4) Tff7b72& T79c0ff0xFFFFFFFF Tff7b72for Te6edf3xTb4b4b4,Te6edf3y Tff7b72in Tffa657zipTb4b4b4(Tff7b72selfTff7b72.Td2a8ff_hTb4b4b4, Tb4b4b4[Te6edf3aTb4b4b4,Te6edf3bTb4b4b4,Te6edf3cTb4b4b4,Te6edf3dTb4b4b4,Te6edf3eTb4b4b4,Te6edf3fTb4b4b4,Te6edf3gTb4b4b4,Te6edf3hTb4b4b4]Tb4b4b4)Tb4b4b4]

Tff7b72def Td2a8ffupdateTb4b4b4(Tff7b72selfTb4b4b4, Te6edf3mTb4b4b4)Tb4b4b4:

Tff7b72if Tff7b72not Te6edf3mTb4b4b4:

Tff7b72return

Tff7b72if Tffa657typeTb4b4b4(Te6edf3mTb4b4b4) Tff7b72is Tff7b72not Tffa657bytesTb4b4b4:

Tff7b72raise Tf85149TypeErrorTb4b4b4(Ta5d6ff'Tffd700%sTa5d6ff() argument 1 must be bytes, not Tffd700%sTa5d6ff' Tff7b72% Tb4b4b4(Te6edf3sysTff7b72.Td2a8ff_getframeTb4b4b4(Tb4b4b4)Tff7b72.Td2a8fff_codeTff7b72.Td2a8ffco_nameTb4b4b4, Tffa657typeTb4b4b4(Te6edf3mTb4b4b4)Tff7b72.Td2a8ff__name__Tb4b4b4)Tb4b4b4)

Tff7b72selfTff7b72.Td2a8ff_buffer Tff7b72+Tff7b72= Te6edf3m

Tff7b72selfTff7b72.Td2a8ff_counter Tff7b72+Tff7b72= Tffa657lenTb4b4b4(Te6edf3mTb4b4b4)

Tff7b72while Tffa657lenTb4b4b4(Tff7b72selfTff7b72.Td2a8ff_bufferTb4b4b4) Tff7b72>Tff7b72= T79c0ff64Tb4b4b4:

Tff7b72selfTff7b72.Td2a8ff_sha256_processTb4b4b4(Tff7b72selfTff7b72.Td2a8ff_bufferTb4b4b4[Tb4b4b4:T79c0ff64Tb4b4b4]Tb4b4b4)

Tff7b72selfTff7b72.Td2a8ff_buffer Tff7b72= Tff7b72selfTff7b72.Td2a8ff_bufferTb4b4b4[T79c0ff64Tb4b4b4:Tb4b4b4]

Tff7b72def Td2a8ffdigestTb4b4b4(Tff7b72selfTb4b4b4)Tb4b4b4:

Te6edf3mdi Tff7b72= Tff7b72selfTff7b72.Td2a8ff_counter Tff7b72& T79c0ff0x3F

Te6edf3length Tff7b72= Te6edf3structTff7b72.Td2a8ffpackTb4b4b4(Ta5d6ff'Ta5d6ff!QTa5d6ff'Tb4b4b4, Tff7b72selfTff7b72.Td2a8ff_counterTff7b72<<T79c0ff3Tb4b4b4)

Tff7b72if Te6edf3mdi Tff7b72< T79c0ff56Tb4b4b4:

Te6edf3padlen Tff7b72= T79c0ff55Tff7b72-Te6edf3mdi

Tff7b72elseTb4b4b4:

Te6edf3padlen Tff7b72= T79c0ff119Tff7b72-Te6edf3mdi

Te6edf3r Tff7b72= Tff7b72selfTff7b72.Td2a8ffcopyTb4b4b4(Tb4b4b4)

Te6edf3rTff7b72.Td2a8ffupdateTb4b4b4(Ta5d6ffbTa5d6ff'Tffea00\x80Ta5d6ff'Tff7b72+Tb4b4b4(Ta5d6ffbTa5d6ff'Tffea00\x00Ta5d6ff'Tff7b72*Te6edf3padlenTb4b4b4)Tff7b72+Te6edf3lengthTb4b4b4)

Tff7b72return Ta5d6ffbTa5d6ff'Ta5d6ff'Tff7b72.Td2a8ffjoinTb4b4b4(Tb4b4b4[Te6edf3structTff7b72.Td2a8ffpackTb4b4b4(Ta5d6ff'Ta5d6ff!LTa5d6ff'Tb4b4b4, Te6edf3iTb4b4b4) Tff7b72for Te6edf3i Tff7b72in Te6edf3rTff7b72.Td2a8ff_hTb4b4b4[Tb4b4b4:Tff7b72selfTff7b72.Td2a8ff_output_sizeTb4b4b4]Tb4b4b4]Tb4b4b4)

Tff7b72def Td2a8ffhexdigestTb4b4b4(Tff7b72selfTb4b4b4)Tb4b4b4:

Tff7b72return Tff7b72selfTff7b72.Td2a8ffdigestTb4b4b4(Tb4b4b4)Tff7b72.Td2a8ffencodeTb4b4b4(Ta5d6ff'Ta5d6ffhexTa5d6ff'Tb4b4b4)

Tff7b72def Td2a8ffcopyTb4b4b4(Tff7b72selfTb4b4b4)Tb4b4b4:

Tff7b72return Te6edf3copyTff7b72.Td2a8ffdeepcopyTb4b4b4(Tff7b72selfTb4b4b4)