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### Obfuscation "Version 5"
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### Obfuscation "Version 5"
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Introduced in **Filter Foundry 1.7.0.8**
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Introduced in **Filter Foundry 1.7.0.8**
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Obfuscation version 5 is the same as version 4, but there is a constraint
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Obfuscation version 5 is the same as version 4, but there is a constraint
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that the seed must be equal to the hash of the deobfuscated PARM.
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that the seed must be equal to the CRC32b checksum of the deobfuscated PARM.
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This is done to check the integrity of the deobfuscation.
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This is done to check the integrity of the deobfuscation.
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Also, the xor-shifting is intentionally incompatible with version 4
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Also, the xor-shifting is intentionally incompatible with version 4
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to avoid downgrade-attacks.
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(to avoid downgrade-attacks) by XORing the initial seed with 0xFFFFFFFF.
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### Obfuscation "Version 4"
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### Obfuscation "Version 4"
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Introduced in **Filter Foundry 1.7.0.7**
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Introduced in **Filter Foundry 1.7.0.7**
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