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cfw_install: handle pre-decrypted DMGs from restore_offline #334

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cfw_install: handle pre-decrypted DMGs from restore_offline #334

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19 changes: 13 additions & 6 deletions scripts/cfw_install.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -303,13 +303,20 @@ else
MNT_SYSOS="$TEMP_DIR/mnt_sysos"
MNT_APPOS="$TEMP_DIR/mnt_appos"

# Decrypt SystemOS AEA (cached — skip if already decrypted)
# Decrypt SystemOS AEA (cached — skip if already decrypted).
# `make restore_offline` decrypts .dmg.aea files in place, keeping the .aea
# filename, so the BuildManifest path may already point to a raw DMG.
if [[ ! -f "$SYSOS_DMG" ]]; then
echo " Extracting AEA key..."
AEA_KEY=$(ipsw fw aea --key "$RESTORE_DIR/$CRYPTEX_SYSOS")
echo " key: $AEA_KEY"
echo " Decrypting SystemOS..."
aea decrypt -i "$RESTORE_DIR/$CRYPTEX_SYSOS" -o "$SYSOS_DMG" -key-value "$AEA_KEY"
if [[ "$(xxd -l 4 -p "$RESTORE_DIR/$CRYPTEX_SYSOS")" == "41454131" ]]; then
echo " Extracting AEA key..."
AEA_KEY=$(ipsw fw aea --key "$RESTORE_DIR/$CRYPTEX_SYSOS")
echo " key: $AEA_KEY"
echo " Decrypting SystemOS..."
aea decrypt -i "$RESTORE_DIR/$CRYPTEX_SYSOS" -o "$SYSOS_DMG" -key-value "$AEA_KEY"
else
echo " SystemOS already decrypted in place (no AEA1 magic), copying..."
cp "$RESTORE_DIR/$CRYPTEX_SYSOS" "$SYSOS_DMG"
fi
else
echo " Using cached SystemOS DMG"
fi
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19 changes: 13 additions & 6 deletions scripts/cfw_install_dev.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -242,13 +242,20 @@ APPOS_DMG="$TEMP_DIR/CryptexAppOS.dmg"
MNT_SYSOS="$TEMP_DIR/mnt_sysos"
MNT_APPOS="$TEMP_DIR/mnt_appos"

# Decrypt SystemOS AEA (cached — skip if already decrypted)
# Decrypt SystemOS AEA (cached — skip if already decrypted).
# `make restore_offline` decrypts .dmg.aea files in place, keeping the .aea
# filename, so the BuildManifest path may already point to a raw DMG.
if [[ ! -f "$SYSOS_DMG" ]]; then
echo " Extracting AEA key..."
AEA_KEY=$(ipsw fw aea --key "$RESTORE_DIR/$CRYPTEX_SYSOS")
echo " key: $AEA_KEY"
echo " Decrypting SystemOS..."
aea decrypt -i "$RESTORE_DIR/$CRYPTEX_SYSOS" -o "$SYSOS_DMG" -key-value "$AEA_KEY"
if [[ "$(xxd -l 4 -p "$RESTORE_DIR/$CRYPTEX_SYSOS")" == "41454131" ]]; then
echo " Extracting AEA key..."
AEA_KEY=$(ipsw fw aea --key "$RESTORE_DIR/$CRYPTEX_SYSOS")
Comment on lines 248 to +251
echo " key: $AEA_KEY"
echo " Decrypting SystemOS..."
aea decrypt -i "$RESTORE_DIR/$CRYPTEX_SYSOS" -o "$SYSOS_DMG" -key-value "$AEA_KEY"
else
echo " SystemOS already decrypted in place (no AEA1 magic), copying..."
cp "$RESTORE_DIR/$CRYPTEX_SYSOS" "$SYSOS_DMG"
fi
else
echo " Using cached SystemOS DMG"
fi
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