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View Code? Open in Web Editor NEWAES-GCM implementation in Circom
AES-GCM implementation in Circom
Not sure if you care, but if you compile the circuit with the latest circom it gives a ton of warnings about missing constraints
warning[CA02]: In template "AES256Encrypt()": Subcomponent input/output signal num2bits_1[1][1][0].in does not appear in any constraint of the father component
warning[CA02]: In template "AES256Encrypt()": Subcomponent input/output signal num2bits_1[11][1][1].in does not appear in any constraint of the father component
warning[CA02]: In template "AES256Encrypt()": Subcomponent input/output signal num2bits_1[0][2][1].in does not appear in any constraint of the father component
warning[CA02]: In template "AES256Encrypt()": Subcomponent input/output signal num2bits_1[4][3][0].in does not appear in any constraint of the father component
warning[CA02]: In template "AES256Encrypt()": Subcomponent input/output signal num2bits_1[4][1][3].in does not appear in any constraint of the father component
warning[CA02]: In template "AES256Encrypt()": Subcomponent input/output signal num2bits_1[5][0][0].in does not appear in any constraint of the father component
warning[CA02]: In template "AES256Encrypt()": Subcomponent input/output signal num2bits_1[6][1][0].in does not appear in any constraint of the father component
and so on
Which makes it insecure
Currently there is no CI pipeline for this project. Let's try to set it up.
CC: @gauravsrivastav
Currently there is a lot of redundancy between key expansion and encryption code. Let's merge together.
Decryption is same as encryption with slight modification in the CTR mode used by us.
Currently the number of constraints for different message size:
constraints - 863232
constraints - 1615392
constraints - 2618272
constraints - 64796832
These are way too much. I think there are multiple places where we can optimize and bring down the number of constraints.
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