# Size of Rotation keys

**URL:** <https://openfhe.discourse.group/t/size-of-rotation-keys/484>\
**Category:** FHE Questions\
**Created:** [April 25, 2023, 10:33am UTC](https://openfhe.discourse.group/t/size-of-rotation-keys/484 "2023-04-25T10:33:16Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![ypolyakov](https://yyz1.discourse-cdn.com/flex031/user_avatar/openfhe.discourse.group/ypolyakov/32/47_2.png) [@ypolyakov](https://openfhe.discourse.group/u/ypolyakov)\
**Post date:** [May 5, 2023, 3:45pm UTC](https://openfhe.discourse.group/t/size-of-rotation-keys/484/4 "2023-05-05T15:45:00Z")

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See the key estimates at [Bootstrapping AutomorphismKey keys exceeds maximum protobuf size of 2GB](https://openfhe.discourse.group/t/bootstrapping-automorphismkey-keys-exceeds-maximum-protobuf-size-of-2gb/505)

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