Daniel Bedeleanu
ea49cd6e4a
- Create backend/services/image_storage.py with 4 core functions:
- sanitize_filename(): remove unsafe chars, limit to 255 chars, convert to lowercase
- get_unique_filename(): handle collisions with UUID suffix (format: {name}_{uuid8}_{variant}.jpg)
- ensure_image_directories(): create /images/ root and category subdirs on startup
- save_image(): save bytes to /images/{category}/{filename}, returns relative path
- Create comprehensive test suite (22 tests) covering all functionality
- Integrate ensure_image_directories() into FastAPI startup event
- Directory structure: /images/{category}/{filename}
- Collision handling: auto-suffix with UUID if filename exists
- All tests passing, pathlib.Path for safe operations
80 lines
2.0 KiB
Python
80 lines
2.0 KiB
Python
#
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# This file is part of pyasn1-modules software.
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#
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# Created by Russ Housley with assistance from asn1ate v.0.6.0.
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#
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# Copyright (c) 2019, Vigil Security, LLC
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# License: http://snmplabs.com/pyasn1/license.html
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#
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# Algorithm Identifiers for RSASSA-PSS and ECDSA using SHAKEs
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#
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# ASN.1 source from:
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# https://www.rfc-editor.org/rfc/rfc8692.txt
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#
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from pyasn1.type import univ
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from pyasn1_modules import rfc4055
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from pyasn1_modules import rfc5280
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from pyasn1_modules import rfc5480
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# SHAKE128 One-Way Hash Function
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id_shake128 = univ.ObjectIdentifier('2.16.840.1.101.3.4.2.11')
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mda_shake128 = rfc5280.AlgorithmIdentifier()
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mda_shake128['algorithm'] = id_shake128
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# mda_shake128['parameters'] is absent
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# SHAKE256 One-Way Hash Function
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id_shake256 = univ.ObjectIdentifier('2.16.840.1.101.3.4.2.12')
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mda_shake256 = rfc5280.AlgorithmIdentifier()
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mda_shake256['algorithm'] = id_shake256
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# mda_shake256['parameters'] is absent
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# RSA PSS with SHAKE128
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id_RSASSA_PSS_SHAKE128 = univ.ObjectIdentifier('1.3.6.1.5.5.7.6.30')
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sa_rSASSA_PSS_SHAKE128 = rfc5280.AlgorithmIdentifier()
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sa_rSASSA_PSS_SHAKE128['algorithm'] = id_RSASSA_PSS_SHAKE128
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# sa_rSASSA_PSS_SHAKE128['parameters'] is absent
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pk_rsaSSA_PSS_SHAKE128 = rfc4055.RSAPublicKey()
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# RSA PSS with SHAKE256
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id_RSASSA_PSS_SHAKE256 = univ.ObjectIdentifier('1.3.6.1.5.5.7.6.31')
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sa_rSASSA_PSS_SHAKE256 = rfc5280.AlgorithmIdentifier()
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sa_rSASSA_PSS_SHAKE256['algorithm'] = id_RSASSA_PSS_SHAKE256
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# sa_rSASSA_PSS_SHAKE256['parameters'] is absent
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pk_rsaSSA_PSS_SHAKE256 = rfc4055.RSAPublicKey()
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# ECDSA with SHAKE128
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id_ecdsa_with_shake128 = univ.ObjectIdentifier('1.3.6.1.5.5.7.6.32')
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sa_ecdsa_with_shake128 = rfc5280.AlgorithmIdentifier()
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sa_ecdsa_with_shake128['algorithm'] = id_ecdsa_with_shake128
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# sa_ecdsa_with_shake128['parameters'] is absent
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pk_ec = rfc5480.ECPoint()
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# ECDSA with SHAKE128
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id_ecdsa_with_shake256 = univ.ObjectIdentifier('1.3.6.1.5.5.7.6.33')
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sa_ecdsa_with_shake256 = rfc5280.AlgorithmIdentifier()
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sa_ecdsa_with_shake256['algorithm'] = id_ecdsa_with_shake256
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# sa_ecdsa_with_shake256['parameters'] is absent
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