Fails to Find AuthKey .p8 in Unity Cloud Build Post-Build Script

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Hi everyone!I got an error trying to automatically upload my .ipa to TestFlight through Post-build script (Unity Cloud Build (Build Automation)):

[error] ErrorDomain=ITunesConnectionAuthenticationErrorDomain Code=-26000 “Failed to generate JWT token: ErrorDomain=NSCocoaErrorDomain Code=-43 ‘Failed to load AuthKey file.’ The file ‘AuthKey_<YOUR_API_KEY>.p8’ could not be found in: • /BUILD_PATH/.../private_keys 
 • ~/private_keys
 • ~/.private_keys
 • ~/.appstoreconnect/private_keys”

In post-build.bash I tried the following two options but both don't work:

1 option:

KEY_WITH_NEWLINES=$(echo $CONNECT_API_KEY | jq '.private_key |= sub(" (?!PRIVATE|KEY)"; "\n"; "g")' -c -j)
echo $KEY_WITH_NEWLINES > ~/.appstoreconnect/private_keys/AuthKey_${API_KEY_ID}.p8

2 option:

mkdir -p ~/.appstoreconnect/private_keys
echo "$CONNECT_API_KEY" | jq -r '.private_key' > ~/.appstoreconnect/private_keys/AuthKey_${API_KEY_ID}.p8

In Unity Cloud Build (Build Automation) → Advanced Options → Environment Variables → Variable value for CONNECT_API_KEY I indicate in the following format:

{"private_key":"-----BEGIN PRIVATE KEY-----\nMIIEv...\n-----END PRIVATE KEY-----"}

Please tell me how to fix the error? Is it wrong in my code in post-build.bash or the input format Variable value for CONNECT_API_KEY?

Answered by Jan__M in 847210022

Solved. The following approach worked.

In post-build.bash:

mkdir -p ~/.appstoreconnect/private_keys
printf '%b' "$CONNECT_API_KEY" > ~/.appstoreconnect/private_keys/AuthKey_${API_KEY_ID}.p8
if [ ! -f ~/.appstoreconnect/private_keys/AuthKey_${API_KEY_ID}.p8 ]; then

Unity Cloud Build (Build Automation) → Advanced Options → Environment Variables → Variable value for CONNECT_API_KEY: -----BEGIN PRIVATE KEY-----\nMIIEv...\n-----END PRIVATE KEY-----

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Answer 1

Jan__M OP

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Accepted Answer

Solved. The following approach worked.

In post-build.bash:

mkdir -p ~/.appstoreconnect/private_keys
printf '%b' "$CONNECT_API_KEY" > ~/.appstoreconnect/private_keys/AuthKey_${API_KEY_ID}.p8
if [ ! -f ~/.appstoreconnect/private_keys/AuthKey_${API_KEY_ID}.p8 ]; then

Unity Cloud Build (Build Automation) → Advanced Options → Environment Variables → Variable value for CONNECT_API_KEY: -----BEGIN PRIVATE KEY-----\nMIIEv...\n-----END PRIVATE KEY-----

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