How can I change the SHA256 to SHA1 of apk signer

Asked Oct 28 '16 at 04:01

Active Oct 16 '17 at 10:43

Viewed 1,610 times

I have apk file signed by SHA256.

Step1) I deleted the sign,

zip -d ./myapp.apk 'META-INF/*'

step2) Check sign was correctly deleted

keytool -list -printcert -jarfile ./myapp.apk

Step3) I re-signed my application with SHA1

jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore android.keystore ./my.apk mykey

Step4) Check

keytool -list -printcert -jarfile ./takiyamaAR.apk

However it shows

 MD5:  19:3F:E4:D8:BB:BB:0A:85:85:CB:99:F2:37:54:24:EB
 SHA1: AD:1D:26:E9:A5:74:14:76:F4:EA:36:D2:7F:F6:9E:E9:92:CB:B2:74
 SHA256: A6:07:46:9C:3A:FD:38:A0:7D:9C:35:91:AD:E7:83:3F:AD:C4:84:C1:AE:36:C5:BD:A0:AE:F3:62:D9:8C:57:FF
  Signature algorithm name: SHA256withRSA
 version: 3

It looks like still SHA256. I surely signed with SHA1 on Step3.

How can I use SHA1 instead of SHA256?

edited Oct 16 '17 at 10:43

Vadim Kotov

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asked Oct 28 '16 at 04:01

whitebear

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Any particular reason why you want to use an outdated (and now unsafe) message digest function? – Henry Oct 28 '16 at 04:06
Since some of our customers complaint about error code 103. I found out the solution [here](http://stackoverflow.com/questions/33149140/play-store-cant-install-app-error-code-103) – whitebear Oct 28 '16 at 05:28
Do you find any solution on this? – useless dinosaur Nov 23 '16 at 07:07
I have gave up to making SHA1 ..... I found work around way, not use the library which require SHA1 – whitebear Feb 04 '17 at 06:04

How can I change the SHA256 to SHA1 of apk signer

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